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Finding the Fourth Proportional to 355,215.85, 532,811.49 and 88,978.66

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Solution

The fourth proportional to 355,215.85, 532,811.49 and 88,978.66 is: 133,464.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,215.85 : 532,811.49 = 88,978.66 : x
  2. Step 2: Convert to fraction form
    355,215.85/532,811.49 = 88,978.66/x
  3. Step 3: Cross multiply
    355,215.85x = 532,811.49 × 88,978.66
  4. Step 4: Simplify right side
    355,215.85x = 47,408,852,412.80
  5. Step 5: Solve for x
    x = 47,408,852,412.80/355,215.85
  6. Step 6: Final answer
    x = 133,464.91

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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.