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Finding the Fourth Proportional to 437,592.87, 656,389.40 and 138,096.77

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Solution

The fourth proportional to 437,592.87, 656,389.40 and 138,096.77 is: 207,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,592.87 : 656,389.40 = 138,096.77 : x
  2. Step 2: Convert to fraction form
    437,592.87/656,389.40 = 138,096.77/x
  3. Step 3: Cross multiply
    437,592.87x = 656,389.40 × 138,096.77
  4. Step 4: Simplify right side
    437,592.87x = 90,645,252,029.81
  5. Step 5: Solve for x
    x = 90,645,252,029.81/437,592.87
  6. Step 6: Final answer
    x = 207,145.18

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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.