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Finding the Fourth Proportional to 250,410.71, 345,686.47 and 142,959.98

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Solution

The fourth proportional to 250,410.71, 345,686.47 and 142,959.98 is: 197,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,410.71 : 345,686.47 = 142,959.98 : x
  2. Step 2: Convert to fraction form
    250,410.71/345,686.47 = 142,959.98/x
  3. Step 3: Cross multiply
    250,410.71x = 345,686.47 × 142,959.98
  4. Step 4: Simplify right side
    250,410.71x = 49,419,331,344.29
  5. Step 5: Solve for x
    x = 49,419,331,344.29/250,410.71
  6. Step 6: Final answer
    x = 197,353.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.