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Finding the Fourth Proportional to 351,776.48, 527,657.32 and 85,538.36

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Solution

The fourth proportional to 351,776.48, 527,657.32 and 85,538.36 is: 128,305.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,776.48 : 527,657.32 = 85,538.36 : x
  2. Step 2: Convert to fraction form
    351,776.48/527,657.32 = 85,538.36/x
  3. Step 3: Cross multiply
    351,776.48x = 527,657.32 × 85,538.36
  4. Step 4: Simplify right side
    351,776.48x = 45,134,941,794.80
  5. Step 5: Solve for x
    x = 45,134,941,794.80/351,776.48
  6. Step 6: Final answer
    x = 128,305.74

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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.