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Finding the Fourth Proportional to 388,471.96, 536,082.96 and 216,389.26

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Solution

The fourth proportional to 388,471.96, 536,082.96 and 216,389.26 is: 298,612.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,471.96 : 536,082.96 = 216,389.26 : x
  2. Step 2: Convert to fraction form
    388,471.96/536,082.96 = 216,389.26/x
  3. Step 3: Cross multiply
    388,471.96x = 536,082.96 × 216,389.26
  4. Step 4: Simplify right side
    388,471.96x = 116,002,595,013.01
  5. Step 5: Solve for x
    x = 116,002,595,013.01/388,471.96
  6. Step 6: Final answer
    x = 298,612.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.