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Finding the Fourth Proportional to 251,618.40, 377,476.20 and 126,959.40

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Solution

The fourth proportional to 251,618.40, 377,476.20 and 126,959.40 is: 190,463.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,618.40 : 377,476.20 = 126,959.40 : x
  2. Step 2: Convert to fraction form
    251,618.40/377,476.20 = 126,959.40/x
  3. Step 3: Cross multiply
    251,618.40x = 377,476.20 × 126,959.40
  4. Step 4: Simplify right side
    251,618.40x = 47,924,151,866.28
  5. Step 5: Solve for x
    x = 47,924,151,866.28/251,618.40
  6. Step 6: Final answer
    x = 190,463.62

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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.