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Finding the Fourth Proportional to 404,310.02, 558,127.16 and 261,139.88

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Solution

The fourth proportional to 404,310.02, 558,127.16 and 261,139.88 is: 360,488.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,310.02 : 558,127.16 = 261,139.88 : x
  2. Step 2: Convert to fraction form
    404,310.02/558,127.16 = 261,139.88/x
  3. Step 3: Cross multiply
    404,310.02x = 558,127.16 × 261,139.88
  4. Step 4: Simplify right side
    404,310.02x = 145,749,255,490.81
  5. Step 5: Solve for x
    x = 145,749,255,490.81/404,310.02
  6. Step 6: Final answer
    x = 360,488.86

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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.