Home / 390,799.20-585,788.40-248,753.28

Finding the Fourth Proportional to 390,799.20, 585,788.40 and 248,753.28

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Solution

The fourth proportional to 390,799.20, 585,788.40 and 248,753.28 is: 372,868.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,799.20 : 585,788.40 = 248,753.28 : x
  2. Step 2: Convert to fraction form
    390,799.20/585,788.40 = 248,753.28/x
  3. Step 3: Cross multiply
    390,799.20x = 585,788.40 × 248,753.28
  4. Step 4: Simplify right side
    390,799.20x = 145,716,785,885.95
  5. Step 5: Solve for x
    x = 145,716,785,885.95/390,799.20
  6. Step 6: Final answer
    x = 372,868.69

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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.