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Finding the Fourth Proportional to 437,695.58, 656,600.78 and 171,421.49

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Solution

The fourth proportional to 437,695.58, 656,600.78 and 171,421.49 is: 257,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,695.58 : 656,600.78 = 171,421.49 : x
  2. Step 2: Convert to fraction form
    437,695.58/656,600.78 = 171,421.49/x
  3. Step 3: Cross multiply
    437,695.58x = 656,600.78 × 171,421.49
  4. Step 4: Simplify right side
    437,695.58x = 112,555,484,042.76
  5. Step 5: Solve for x
    x = 112,555,484,042.76/437,695.58
  6. Step 6: Final answer
    x = 257,154.72

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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.