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Finding the Fourth Proportional to 437,561.40, 656,487.70 and 157,100.60

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Solution

The fourth proportional to 437,561.40, 656,487.70 and 157,100.60 is: 235,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,561.40 : 656,487.70 = 157,100.60 : x
  2. Step 2: Convert to fraction form
    437,561.40/656,487.70 = 157,100.60/x
  3. Step 3: Cross multiply
    437,561.40x = 656,487.70 × 157,100.60
  4. Step 4: Simplify right side
    437,561.40x = 103,134,611,562.62
  5. Step 5: Solve for x
    x = 103,134,611,562.62/437,561.40
  6. Step 6: Final answer
    x = 235,703.18

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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.