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Finding the Fourth Proportional to 261,872.98, 392,077.32 and 141,498.62

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Solution

The fourth proportional to 261,872.98, 392,077.32 and 141,498.62 is: 211,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,872.98 : 392,077.32 = 141,498.62 : x
  2. Step 2: Convert to fraction form
    261,872.98/392,077.32 = 141,498.62/x
  3. Step 3: Cross multiply
    261,872.98x = 392,077.32 × 141,498.62
  4. Step 4: Simplify right side
    261,872.98x = 55,478,399,713.30
  5. Step 5: Solve for x
    x = 55,478,399,713.30/261,872.98
  6. Step 6: Final answer
    x = 211,852.33

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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.