Home / 288,521.28-398,270.48-258,253.20

Finding the Fourth Proportional to 288,521.28, 398,270.48 and 258,253.20

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Solution

The fourth proportional to 288,521.28, 398,270.48 and 258,253.20 is: 356,488.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,521.28 : 398,270.48 = 258,253.20 : x
  2. Step 2: Convert to fraction form
    288,521.28/398,270.48 = 258,253.20/x
  3. Step 3: Cross multiply
    288,521.28x = 398,270.48 × 258,253.20
  4. Step 4: Simplify right side
    288,521.28x = 102,854,625,925.54
  5. Step 5: Solve for x
    x = 102,854,625,925.54/288,521.28
  6. Step 6: Final answer
    x = 356,488.87

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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.