Home / 351,623.85-527,428.49-85,385.76

Finding the Fourth Proportional to 351,623.85, 527,428.49 and 85,385.76

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Solution

The fourth proportional to 351,623.85, 527,428.49 and 85,385.76 is: 128,076.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,623.85 : 527,428.49 = 85,385.76 : x
  2. Step 2: Convert to fraction form
    351,623.85/527,428.49 = 85,385.76/x
  3. Step 3: Cross multiply
    351,623.85x = 527,428.49 × 85,385.76
  4. Step 4: Simplify right side
    351,623.85x = 45,034,883,266.45
  5. Step 5: Solve for x
    x = 45,034,883,266.45/351,623.85
  6. Step 6: Final answer
    x = 128,076.87

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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.