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Finding the Fourth Proportional to 145,395, 218,092.50 and 38,779.29

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Solution

The fourth proportional to 145,395, 218,092.50 and 38,779.29 is: 58,168.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,395 : 218,092.50 = 38,779.29 : x
  2. Step 2: Convert to fraction form
    145,395/218,092.50 = 38,779.29/x
  3. Step 3: Cross multiply
    145,395x = 218,092.50 × 38,779.29
  4. Step 4: Simplify right side
    145,395x = 8,457,472,304.33
  5. Step 5: Solve for x
    x = 8,457,472,304.33/145,395
  6. Step 6: Final answer
    x = 58,168.94

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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.