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Finding the Fourth Proportional to 251,116.84, 346,543.78 and 136,397.72

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Solution

The fourth proportional to 251,116.84, 346,543.78 and 136,397.72 is: 188,230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,116.84 : 346,543.78 = 136,397.72 : x
  2. Step 2: Convert to fraction form
    251,116.84/346,543.78 = 136,397.72/x
  3. Step 3: Cross multiply
    251,116.84x = 346,543.78 × 136,397.72
  4. Step 4: Simplify right side
    251,116.84x = 47,267,781,472.18
  5. Step 5: Solve for x
    x = 47,267,781,472.18/251,116.84
  6. Step 6: Final answer
    x = 188,230.23

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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.