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Finding the Fourth Proportional to 539,885.17, 745,046.64 and 307,300.75

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Solution

The fourth proportional to 539,885.17, 745,046.64 and 307,300.75 is: 424,077.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,885.17 : 745,046.64 = 307,300.75 : x
  2. Step 2: Convert to fraction form
    539,885.17/745,046.64 = 307,300.75/x
  3. Step 3: Cross multiply
    539,885.17x = 745,046.64 × 307,300.75
  4. Step 4: Simplify right side
    539,885.17x = 228,953,391,035.91
  5. Step 5: Solve for x
    x = 228,953,391,035.91/539,885.17
  6. Step 6: Final answer
    x = 424,077.94

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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.