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Finding the Fourth Proportional to 318,790.38, 474,422.13 and 308,159.94

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Solution

The fourth proportional to 318,790.38, 474,422.13 and 308,159.94 is: 458,601.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,790.38 : 474,422.13 = 308,159.94 : x
  2. Step 2: Convert to fraction form
    318,790.38/474,422.13 = 308,159.94/x
  3. Step 3: Cross multiply
    318,790.38x = 474,422.13 × 308,159.94
  4. Step 4: Simplify right side
    318,790.38x = 146,197,895,115.47
  5. Step 5: Solve for x
    x = 146,197,895,115.47/318,790.38
  6. Step 6: Final answer
    x = 458,601.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.