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Finding the Fourth Proportional to 261,576.26, 392,264.80 and 154,990.30

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Solution

The fourth proportional to 261,576.26, 392,264.80 and 154,990.30 is: 232,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,576.26 : 392,264.80 = 154,990.30 : x
  2. Step 2: Convert to fraction form
    261,576.26/392,264.80 = 154,990.30/x
  3. Step 3: Cross multiply
    261,576.26x = 392,264.80 × 154,990.30
  4. Step 4: Simplify right side
    261,576.26x = 60,797,237,663.30
  5. Step 5: Solve for x
    x = 60,797,237,663.30/261,576.26
  6. Step 6: Final answer
    x = 232,426.43

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1.5x scale

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.