Home / 415,121.12-572,881.20-245,500.64

Finding the Fourth Proportional to 415,121.12, 572,881.20 and 245,500.64

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Solution

The fourth proportional to 415,121.12, 572,881.20 and 245,500.64 is: 338,799.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,121.12 : 572,881.20 = 245,500.64 : x
  2. Step 2: Convert to fraction form
    415,121.12/572,881.20 = 245,500.64/x
  3. Step 3: Cross multiply
    415,121.12x = 572,881.20 × 245,500.64
  4. Step 4: Simplify right side
    415,121.12x = 140,642,701,243.97
  5. Step 5: Solve for x
    x = 140,642,701,243.97/415,121.12
  6. Step 6: Final answer
    x = 338,799.19

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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.