Home / 401,458.49-553,985.13-220,166.45

Finding the Fourth Proportional to 401,458.49, 553,985.13 and 220,166.45

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Solution

The fourth proportional to 401,458.49, 553,985.13 and 220,166.45 is: 303,814.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,458.49 : 553,985.13 = 220,166.45 : x
  2. Step 2: Convert to fraction form
    401,458.49/553,985.13 = 220,166.45/x
  3. Step 3: Cross multiply
    401,458.49x = 553,985.13 × 220,166.45
  4. Step 4: Simplify right side
    401,458.49x = 121,968,939,424.89
  5. Step 5: Solve for x
    x = 121,968,939,424.89/401,458.49
  6. Step 6: Final answer
    x = 303,814.57

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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.