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Finding the Fourth Proportional to 317,424.84, 438,046.04 and 181,461.78

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Solution

The fourth proportional to 317,424.84, 438,046.04 and 181,461.78 is: 250,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,424.84 : 438,046.04 = 181,461.78 : x
  2. Step 2: Convert to fraction form
    317,424.84/438,046.04 = 181,461.78/x
  3. Step 3: Cross multiply
    317,424.84x = 438,046.04 × 181,461.78
  4. Step 4: Simplify right side
    317,424.84x = 79,488,614,140.35
  5. Step 5: Solve for x
    x = 79,488,614,140.35/317,424.84
  6. Step 6: Final answer
    x = 250,417.12

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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.