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Finding the Fourth Proportional to 520,717.66, 781,082.97 and 165,730.30

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Solution

The fourth proportional to 520,717.66, 781,082.97 and 165,730.30 is: 248,597.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,717.66 : 781,082.97 = 165,730.30 : x
  2. Step 2: Convert to fraction form
    520,717.66/781,082.97 = 165,730.30/x
  3. Step 3: Cross multiply
    520,717.66x = 781,082.97 × 165,730.30
  4. Step 4: Simplify right side
    520,717.66x = 129,449,114,942.99
  5. Step 5: Solve for x
    x = 129,449,114,942.99/520,717.66
  6. Step 6: Final answer
    x = 248,597.51

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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.