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Finding the Fourth Proportional to 437,679.42, 656,814.18 and 153,372.53

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Solution

The fourth proportional to 437,679.42, 656,814.18 and 153,372.53 is: 230,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,679.42 : 656,814.18 = 153,372.53 : x
  2. Step 2: Convert to fraction form
    437,679.42/656,814.18 = 153,372.53/x
  3. Step 3: Cross multiply
    437,679.42x = 656,814.18 × 153,372.53
  4. Step 4: Simplify right side
    437,679.42x = 100,737,249,235.75
  5. Step 5: Solve for x
    x = 100,737,249,235.75/437,679.42
  6. Step 6: Final answer
    x = 230,162.18

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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.