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Finding the Fourth Proportional to 425,828.28, 638,174.78 and 201,248.28

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Solution

The fourth proportional to 425,828.28, 638,174.78 and 201,248.28 is: 301,604.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,828.28 : 638,174.78 = 201,248.28 : x
  2. Step 2: Convert to fraction form
    425,828.28/638,174.78 = 201,248.28/x
  3. Step 3: Cross multiply
    425,828.28x = 638,174.78 × 201,248.28
  4. Step 4: Simplify right side
    425,828.28x = 128,431,576,814.38
  5. Step 5: Solve for x
    x = 128,431,576,814.38/425,828.28
  6. Step 6: Final answer
    x = 301,604.15

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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.