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Finding the Fourth Proportional to 404,989.12, 558,881.47 and 223,713.70

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Solution

The fourth proportional to 404,989.12, 558,881.47 and 223,713.70 is: 308,722.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,989.12 : 558,881.47 = 223,713.70 : x
  2. Step 2: Convert to fraction form
    404,989.12/558,881.47 = 223,713.70/x
  3. Step 3: Cross multiply
    404,989.12x = 558,881.47 × 223,713.70
  4. Step 4: Simplify right side
    404,989.12x = 125,029,440,397.58
  5. Step 5: Solve for x
    x = 125,029,440,397.58/404,989.12
  6. Step 6: Final answer
    x = 308,722.96

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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.