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Finding the Fourth Proportional to 145,372.80, 217,897.20 and 56,596.80

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Solution

The fourth proportional to 145,372.80, 217,897.20 and 56,596.80 is: 84,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,372.80 : 217,897.20 = 56,596.80 : x
  2. Step 2: Convert to fraction form
    145,372.80/217,897.20 = 56,596.80/x
  3. Step 3: Cross multiply
    145,372.80x = 217,897.20 × 56,596.80
  4. Step 4: Simplify right side
    145,372.80x = 12,332,284,248.96
  5. Step 5: Solve for x
    x = 12,332,284,248.96/145,372.80
  6. Step 6: Final answer
    x = 84,832.13

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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.