Home / 338,005.20-506,981.40-88,680.72

Finding the Fourth Proportional to 338,005.20, 506,981.40 and 88,680.72

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Solution

The fourth proportional to 338,005.20, 506,981.40 and 88,680.72 is: 133,014.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,005.20 : 506,981.40 = 88,680.72 : x
  2. Step 2: Convert to fraction form
    338,005.20/506,981.40 = 88,680.72/x
  3. Step 3: Cross multiply
    338,005.20x = 506,981.40 × 88,680.72
  4. Step 4: Simplify right side
    338,005.20x = 44,959,475,578.61
  5. Step 5: Solve for x
    x = 44,959,475,578.61/338,005.20
  6. Step 6: Final answer
    x = 133,014.15

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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.