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Finding the Fourth Proportional to 288,660.54, 398,348.91 and 159,607.95

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Solution

The fourth proportional to 288,660.54, 398,348.91 and 159,607.95 is: 220,257.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,660.54 : 398,348.91 = 159,607.95 : x
  2. Step 2: Convert to fraction form
    288,660.54/398,348.91 = 159,607.95/x
  3. Step 3: Cross multiply
    288,660.54x = 398,348.91 × 159,607.95
  4. Step 4: Simplify right side
    288,660.54x = 63,579,652,909.83
  5. Step 5: Solve for x
    x = 63,579,652,909.83/288,660.54
  6. Step 6: Final answer
    x = 220,257.51

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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.