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Finding the Fourth Proportional to 317,613.80, 476,031.90 and 139,932.20

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Solution

The fourth proportional to 317,613.80, 476,031.90 and 139,932.20 is: 209,727.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,613.80 : 476,031.90 = 139,932.20 : x
  2. Step 2: Convert to fraction form
    317,613.80/476,031.90 = 139,932.20/x
  3. Step 3: Cross multiply
    317,613.80x = 476,031.90 × 139,932.20
  4. Step 4: Simplify right side
    317,613.80x = 66,612,191,037.18
  5. Step 5: Solve for x
    x = 66,612,191,037.18/317,613.80
  6. Step 6: Final answer
    x = 209,727.01

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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.