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Finding the Fourth Proportional to 292,959.80, 439,439.70 and 135,141.56

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Solution

The fourth proportional to 292,959.80, 439,439.70 and 135,141.56 is: 202,712.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,959.80 : 439,439.70 = 135,141.56 : x
  2. Step 2: Convert to fraction form
    292,959.80/439,439.70 = 135,141.56/x
  3. Step 3: Cross multiply
    292,959.80x = 439,439.70 × 135,141.56
  4. Step 4: Simplify right side
    292,959.80x = 59,386,566,583.93
  5. Step 5: Solve for x
    x = 59,386,566,583.93/292,959.80
  6. Step 6: Final answer
    x = 202,712.34

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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.