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Finding the Fourth Proportional to 539,897.28, 745,061.40 and 298,175.28

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Solution

The fourth proportional to 539,897.28, 745,061.40 and 298,175.28 is: 411,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,897.28 : 745,061.40 = 298,175.28 : x
  2. Step 2: Convert to fraction form
    539,897.28/745,061.40 = 298,175.28/x
  3. Step 3: Cross multiply
    539,897.28x = 745,061.40 × 298,175.28
  4. Step 4: Simplify right side
    539,897.28x = 222,158,891,562.19
  5. Step 5: Solve for x
    x = 222,158,891,562.19/539,897.28
  6. Step 6: Final answer
    x = 411,483.63

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1.5x scale

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.