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Finding the Fourth Proportional to 356,613.51, 492,177.11 and 220,691.23

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Solution

The fourth proportional to 356,613.51, 492,177.11 and 220,691.23 is: 304,585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,613.51 : 492,177.11 = 220,691.23 : x
  2. Step 2: Convert to fraction form
    356,613.51/492,177.11 = 220,691.23/x
  3. Step 3: Cross multiply
    356,613.51x = 492,177.11 × 220,691.23
  4. Step 4: Simplify right side
    356,613.51x = 108,619,173,459.73
  5. Step 5: Solve for x
    x = 108,619,173,459.73/356,613.51
  6. Step 6: Final answer
    x = 304,585.13

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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.