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Finding the Fourth Proportional to 342,981.80, 515,055.90 and 254,335.40

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Solution

The fourth proportional to 342,981.80, 515,055.90 and 254,335.40 is: 381,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,981.80 : 515,055.90 = 254,335.40 : x
  2. Step 2: Convert to fraction form
    342,981.80/515,055.90 = 254,335.40/x
  3. Step 3: Cross multiply
    342,981.80x = 515,055.90 × 254,335.40
  4. Step 4: Simplify right side
    342,981.80x = 130,996,948,348.86
  5. Step 5: Solve for x
    x = 130,996,948,348.86/342,981.80
  6. Step 6: Final answer
    x = 381,935.57

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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.