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Finding the Fourth Proportional to 377,283.28, 520,387.10 and 256,214.20

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Solution

The fourth proportional to 377,283.28, 520,387.10 and 256,214.20 is: 353,396.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,283.28 : 520,387.10 = 256,214.20 : x
  2. Step 2: Convert to fraction form
    377,283.28/520,387.10 = 256,214.20/x
  3. Step 3: Cross multiply
    377,283.28x = 520,387.10 × 256,214.20
  4. Step 4: Simplify right side
    377,283.28x = 133,330,564,516.82
  5. Step 5: Solve for x
    x = 133,330,564,516.82/377,283.28
  6. Step 6: Final answer
    x = 353,396.43

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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.