Home / 658,860.40-988,339.20-238,081.60

Finding the Fourth Proportional to 658,860.40, 988,339.20 and 238,081.60

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Solution

The fourth proportional to 658,860.40, 988,339.20 and 238,081.60 is: 357,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,860.40 : 988,339.20 = 238,081.60 : x
  2. Step 2: Convert to fraction form
    658,860.40/988,339.20 = 238,081.60/x
  3. Step 3: Cross multiply
    658,860.40x = 988,339.20 × 238,081.60
  4. Step 4: Simplify right side
    658,860.40x = 235,305,378,078.72
  5. Step 5: Solve for x
    x = 235,305,378,078.72/658,860.40
  6. Step 6: Final answer
    x = 357,139.96

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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.