Home / 401,212,917,855.64-553,657,116,218.68-218,310,737,776.12

Finding the Fourth Proportional to 401,212,917,855.64, 553,657,116,218.68 and 218,310,737,776.12

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Solution

The fourth proportional to 401,212,917,855.64, 553,657,116,218.68 and 218,310,737,776.12 is: 301,259,725,541.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,212,917,855.64 : 553,657,116,218.68 = 218,310,737,776.12 : x
  2. Step 2: Convert to fraction form
    401,212,917,855.64/553,657,116,218.68 = 218,310,737,776.12/x
  3. Step 3: Cross multiply
    401,212,917,855.64x = 553,657,116,218.68 × 218,310,737,776.12
  4. Step 4: Simplify right side
    401,212,917,855.64x = 120,869,293,516,699,050,442,752
  5. Step 5: Solve for x
    x = 120,869,293,516,699,050,442,752/401,212,917,855.64
  6. Step 6: Final answer
    x = 301,259,725,541.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.