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Finding the Fourth Proportional to 401,710.11, 554,341.40 and 220,417.53

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Solution

The fourth proportional to 401,710.11, 554,341.40 and 220,417.53 is: 304,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,710.11 : 554,341.40 = 220,417.53 : x
  2. Step 2: Convert to fraction form
    401,710.11/554,341.40 = 220,417.53/x
  3. Step 3: Cross multiply
    401,710.11x = 554,341.40 × 220,417.53
  4. Step 4: Simplify right side
    401,710.11x = 122,186,562,164.74
  5. Step 5: Solve for x
    x = 122,186,562,164.74/401,710.11
  6. Step 6: Final answer
    x = 304,166.01

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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.