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Finding the Fourth Proportional to 404,431.34, 558,117.05 and 223,143.19

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Solution

The fourth proportional to 404,431.34, 558,117.05 and 223,143.19 is: 307,938.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,431.34 : 558,117.05 = 223,143.19 : x
  2. Step 2: Convert to fraction form
    404,431.34/558,117.05 = 223,143.19/x
  3. Step 3: Cross multiply
    404,431.34x = 558,117.05 × 223,143.19
  4. Step 4: Simplify right side
    404,431.34x = 124,540,016,419.38
  5. Step 5: Solve for x
    x = 124,540,016,419.38/404,431.34
  6. Step 6: Final answer
    x = 307,938.59

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Half scale
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Double scale
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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.