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Finding the Fourth Proportional to 385,577.62, 532,096.97 and 215,811.74

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Solution

The fourth proportional to 385,577.62, 532,096.97 and 215,811.74 is: 297,820.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,577.62 : 532,096.97 = 215,811.74 : x
  2. Step 2: Convert to fraction form
    385,577.62/532,096.97 = 215,811.74/x
  3. Step 3: Cross multiply
    385,577.62x = 532,096.97 × 215,811.74
  4. Step 4: Simplify right side
    385,577.62x = 114,832,773,195.61
  5. Step 5: Solve for x
    x = 114,832,773,195.61/385,577.62
  6. Step 6: Final answer
    x = 297,820.12

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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.