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Finding the Fourth Proportional to 520,082.52, 780,220.26 and 165,000.60

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Solution

The fourth proportional to 520,082.52, 780,220.26 and 165,000.60 is: 247,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,082.52 : 780,220.26 = 165,000.60 : x
  2. Step 2: Convert to fraction form
    520,082.52/780,220.26 = 165,000.60/x
  3. Step 3: Cross multiply
    520,082.52x = 780,220.26 × 165,000.60
  4. Step 4: Simplify right side
    520,082.52x = 128,736,811,032.16
  5. Step 5: Solve for x
    x = 128,736,811,032.16/520,082.52
  6. Step 6: Final answer
    x = 247,531.51

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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.