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Finding the Fourth Proportional to 539,909.96, 745,061.49 and 298,187.33

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Solution

The fourth proportional to 539,909.96, 745,061.49 and 298,187.33 is: 411,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,909.96 : 745,061.49 = 298,187.33 : x
  2. Step 2: Convert to fraction form
    539,909.96/745,061.49 = 298,187.33/x
  3. Step 3: Cross multiply
    539,909.96x = 745,061.49 × 298,187.33
  4. Step 4: Simplify right side
    539,909.96x = 222,167,892,663.61
  5. Step 5: Solve for x
    x = 222,167,892,663.61/539,909.96
  6. Step 6: Final answer
    x = 411,490.64

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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.