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Finding the Fourth Proportional to 317,613.78, 438,301.56 and 174,372.80

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Solution

The fourth proportional to 317,613.78, 438,301.56 and 174,372.80 is: 240,631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,613.78 : 438,301.56 = 174,372.80 : x
  2. Step 2: Convert to fraction form
    317,613.78/438,301.56 = 174,372.80/x
  3. Step 3: Cross multiply
    317,613.78x = 438,301.56 × 174,372.80
  4. Step 4: Simplify right side
    317,613.78x = 76,427,869,718.13
  5. Step 5: Solve for x
    x = 76,427,869,718.13/317,613.78
  6. Step 6: Final answer
    x = 240,631.46

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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.