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Finding the Fourth Proportional to 297,051.54, 445,569.95 and 86,691.30

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Solution

The fourth proportional to 297,051.54, 445,569.95 and 86,691.30 is: 130,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,051.54 : 445,569.95 = 86,691.30 : x
  2. Step 2: Convert to fraction form
    297,051.54/445,569.95 = 86,691.30/x
  3. Step 3: Cross multiply
    297,051.54x = 445,569.95 × 86,691.30
  4. Step 4: Simplify right side
    297,051.54x = 38,627,038,423.16
  5. Step 5: Solve for x
    x = 38,627,038,423.16/297,051.54
  6. Step 6: Final answer
    x = 130,034.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.