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Finding the Fourth Proportional to 145,430.64, 218,149.61 and 40,250.52

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Solution

The fourth proportional to 145,430.64, 218,149.61 and 40,250.52 is: 60,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,430.64 : 218,149.61 = 40,250.52 : x
  2. Step 2: Convert to fraction form
    145,430.64/218,149.61 = 40,250.52/x
  3. Step 3: Cross multiply
    145,430.64x = 218,149.61 × 40,250.52
  4. Step 4: Simplify right side
    145,430.64x = 8,780,635,039.04
  5. Step 5: Solve for x
    x = 8,780,635,039.04/145,430.64
  6. Step 6: Final answer
    x = 60,376.79

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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.