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Finding the Fourth Proportional to 437,561.72, 656,342.58 and 105,137.72

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Solution

The fourth proportional to 437,561.72, 656,342.58 and 105,137.72 is: 157,706.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,561.72 : 656,342.58 = 105,137.72 : x
  2. Step 2: Convert to fraction form
    437,561.72/656,342.58 = 105,137.72/x
  3. Step 3: Cross multiply
    437,561.72x = 656,342.58 × 105,137.72
  4. Step 4: Simplify right side
    437,561.72x = 69,006,361,973.96
  5. Step 5: Solve for x
    x = 69,006,361,973.96/437,561.72
  6. Step 6: Final answer
    x = 157,706.58

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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.