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Finding the Fourth Proportional to 261,479.34, 391,724.10 and 154,543.14

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Solution

The fourth proportional to 261,479.34, 391,724.10 and 154,543.14 is: 231,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,479.34 : 391,724.10 = 154,543.14 : x
  2. Step 2: Convert to fraction form
    261,479.34/391,724.10 = 154,543.14/x
  3. Step 3: Cross multiply
    261,479.34x = 391,724.10 × 154,543.14
  4. Step 4: Simplify right side
    261,479.34x = 60,538,272,427.67
  5. Step 5: Solve for x
    x = 60,538,272,427.67/261,479.34
  6. Step 6: Final answer
    x = 231,522.20

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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.