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Finding the Fourth Proportional to 145,833.60, 218,723.40 and 40,630.80

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Solution

The fourth proportional to 145,833.60, 218,723.40 and 40,630.80 is: 60,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,833.60 : 218,723.40 = 40,630.80 : x
  2. Step 2: Convert to fraction form
    145,833.60/218,723.40 = 40,630.80/x
  3. Step 3: Cross multiply
    145,833.60x = 218,723.40 × 40,630.80
  4. Step 4: Simplify right side
    145,833.60x = 8,886,906,720.72
  5. Step 5: Solve for x
    x = 8,886,906,720.72/145,833.60
  6. Step 6: Final answer
    x = 60,938.68

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1.5x scale

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.