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Finding the Fourth Proportional to 404,707.28, 558,496.86 and 223,419.45

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Solution

The fourth proportional to 404,707.28, 558,496.86 and 223,419.45 is: 308,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,707.28 : 558,496.86 = 223,419.45 : x
  2. Step 2: Convert to fraction form
    404,707.28/558,496.86 = 223,419.45/x
  3. Step 3: Cross multiply
    404,707.28x = 558,496.86 × 223,419.45
  4. Step 4: Simplify right side
    404,707.28x = 124,779,061,287.93
  5. Step 5: Solve for x
    x = 124,779,061,287.93/404,707.28
  6. Step 6: Final answer
    x = 308,319.29

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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.