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Finding the Fourth Proportional to 351,616.51, 527,424.77 and 85,375.23

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Solution

The fourth proportional to 351,616.51, 527,424.77 and 85,375.23 is: 128,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,616.51 : 527,424.77 = 85,375.23 : x
  2. Step 2: Convert to fraction form
    351,616.51/527,424.77 = 85,375.23/x
  3. Step 3: Cross multiply
    351,616.51x = 527,424.77 × 85,375.23
  4. Step 4: Simplify right side
    351,616.51x = 45,029,011,768.57
  5. Step 5: Solve for x
    x = 45,029,011,768.57/351,616.51
  6. Step 6: Final answer
    x = 128,062.85

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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.