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Finding the Fourth Proportional to 437,601.16, 656,401.74 and 138,082.60

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Solution

The fourth proportional to 437,601.16, 656,401.74 and 138,082.60 is: 207,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,601.16 : 656,401.74 = 138,082.60 : x
  2. Step 2: Convert to fraction form
    437,601.16/656,401.74 = 138,082.60/x
  3. Step 3: Cross multiply
    437,601.16x = 656,401.74 × 138,082.60
  4. Step 4: Simplify right side
    437,601.16x = 90,637,658,903.72
  5. Step 5: Solve for x
    x = 90,637,658,903.72/437,601.16
  6. Step 6: Final answer
    x = 207,123.90

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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.