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Finding the Fourth Proportional to 291,013.73, 436,373.86 and 88,571

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Solution

The fourth proportional to 291,013.73, 436,373.86 and 88,571 is: 132,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,013.73 : 436,373.86 = 88,571 : x
  2. Step 2: Convert to fraction form
    291,013.73/436,373.86 = 88,571/x
  3. Step 3: Cross multiply
    291,013.73x = 436,373.86 × 88,571
  4. Step 4: Simplify right side
    291,013.73x = 38,650,069,154.06
  5. Step 5: Solve for x
    x = 38,650,069,154.06/291,013.73
  6. Step 6: Final answer
    x = 132,811.84

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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.