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Finding the Fourth Proportional to 145,566.71, 218,348.83 and 40,385.66

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Solution

The fourth proportional to 145,566.71, 218,348.83 and 40,385.66 is: 60,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,566.71 : 218,348.83 = 40,385.66 : x
  2. Step 2: Convert to fraction form
    145,566.71/218,348.83 = 40,385.66/x
  3. Step 3: Cross multiply
    145,566.71x = 218,348.83 × 40,385.66
  4. Step 4: Simplify right side
    145,566.71x = 8,818,161,609.78
  5. Step 5: Solve for x
    x = 8,818,161,609.78/145,566.71
  6. Step 6: Final answer
    x = 60,578.15

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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.