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Finding the Fourth Proportional to 240,124.71, 331,384.86 and 138,165.66

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Solution

The fourth proportional to 240,124.71, 331,384.86 and 138,165.66 is: 190,675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,124.71 : 331,384.86 = 138,165.66 : x
  2. Step 2: Convert to fraction form
    240,124.71/331,384.86 = 138,165.66/x
  3. Step 3: Cross multiply
    240,124.71x = 331,384.86 × 138,165.66
  4. Step 4: Simplify right side
    240,124.71x = 45,786,007,895.91
  5. Step 5: Solve for x
    x = 45,786,007,895.91/240,124.71
  6. Step 6: Final answer
    x = 190,675.95

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1.5x scale

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.