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Finding the Fourth Proportional to 508,082.55, 762,123.83 and 256,140.15

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Solution

The fourth proportional to 508,082.55, 762,123.83 and 256,140.15 is: 384,210.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,082.55 : 762,123.83 = 256,140.15 : x
  2. Step 2: Convert to fraction form
    508,082.55/762,123.83 = 256,140.15/x
  3. Step 3: Cross multiply
    508,082.55x = 762,123.83 × 256,140.15
  4. Step 4: Simplify right side
    508,082.55x = 195,210,510,854.07
  5. Step 5: Solve for x
    x = 195,210,510,854.07/508,082.55
  6. Step 6: Final answer
    x = 384,210.23

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Similar ratio
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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.