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Finding the Fourth Proportional to 440,818.95, 661,290.70 and 141,229.45

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Solution

The fourth proportional to 440,818.95, 661,290.70 and 141,229.45 is: 211,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,818.95 : 661,290.70 = 141,229.45 : x
  2. Step 2: Convert to fraction form
    440,818.95/661,290.70 = 141,229.45/x
  3. Step 3: Cross multiply
    440,818.95x = 661,290.70 × 141,229.45
  4. Step 4: Simplify right side
    440,818.95x = 93,393,721,851.12
  5. Step 5: Solve for x
    x = 93,393,721,851.12/440,818.95
  6. Step 6: Final answer
    x = 211,864.13

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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.