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Finding the Fourth Proportional to 587,204.88, 810,338.28 and 318,934.80

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Solution

The fourth proportional to 587,204.88, 810,338.28 and 318,934.80 is: 440,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,204.88 : 810,338.28 = 318,934.80 : x
  2. Step 2: Convert to fraction form
    587,204.88/810,338.28 = 318,934.80/x
  3. Step 3: Cross multiply
    587,204.88x = 810,338.28 × 318,934.80
  4. Step 4: Simplify right side
    587,204.88x = 258,445,077,264.14
  5. Step 5: Solve for x
    x = 258,445,077,264.14/587,204.88
  6. Step 6: Final answer
    x = 440,127.60

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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.