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Finding the Fourth Proportional to 539,988.30, 745,179.18 and 298,287.74

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Solution

The fourth proportional to 539,988.30, 745,179.18 and 298,287.74 is: 411,634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,988.30 : 745,179.18 = 298,287.74 : x
  2. Step 2: Convert to fraction form
    539,988.30/745,179.18 = 298,287.74/x
  3. Step 3: Cross multiply
    539,988.30x = 745,179.18 × 298,287.74
  4. Step 4: Simplify right side
    539,988.30x = 222,277,814,241.62
  5. Step 5: Solve for x
    x = 222,277,814,241.62/539,988.30
  6. Step 6: Final answer
    x = 411,634.50

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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.