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Finding the Fourth Proportional to 311,577.89, 467,445.56 and 86,938.17

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Solution

The fourth proportional to 311,577.89, 467,445.56 and 86,938.17 is: 130,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,577.89 : 467,445.56 = 86,938.17 : x
  2. Step 2: Convert to fraction form
    311,577.89/467,445.56 = 86,938.17/x
  3. Step 3: Cross multiply
    311,577.89x = 467,445.56 × 86,938.17
  4. Step 4: Simplify right side
    311,577.89x = 40,638,861,126.33
  5. Step 5: Solve for x
    x = 40,638,861,126.33/311,577.89
  6. Step 6: Final answer
    x = 130,429.22

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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.