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Finding the Fourth Proportional to 391,798.22, 587,267.48 and 202,272.80

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Solution

The fourth proportional to 391,798.22, 587,267.48 and 202,272.80 is: 303,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,798.22 : 587,267.48 = 202,272.80 : x
  2. Step 2: Convert to fraction form
    391,798.22/587,267.48 = 202,272.80/x
  3. Step 3: Cross multiply
    391,798.22x = 587,267.48 × 202,272.80
  4. Step 4: Simplify right side
    391,798.22x = 118,788,235,097.89
  5. Step 5: Solve for x
    x = 118,788,235,097.89/391,798.22
  6. Step 6: Final answer
    x = 303,187.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.