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Finding the Fourth Proportional to 145,861.50, 218,829.17 and 40,680.47

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Solution

The fourth proportional to 145,861.50, 218,829.17 and 40,680.47 is: 61,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861.50 : 218,829.17 = 40,680.47 : x
  2. Step 2: Convert to fraction form
    145,861.50/218,829.17 = 40,680.47/x
  3. Step 3: Cross multiply
    145,861.50x = 218,829.17 × 40,680.47
  4. Step 4: Simplify right side
    145,861.50x = 8,902,073,313.47
  5. Step 5: Solve for x
    x = 8,902,073,313.47/145,861.50
  6. Step 6: Final answer
    x = 61,031.00

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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.