Home / 389,436.20-584,111.10-108,981.80

Finding the Fourth Proportional to 389,436.20, 584,111.10 and 108,981.80

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Solution

The fourth proportional to 389,436.20, 584,111.10 and 108,981.80 is: 163,460.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,436.20 : 584,111.10 = 108,981.80 : x
  2. Step 2: Convert to fraction form
    389,436.20/584,111.10 = 108,981.80/x
  3. Step 3: Cross multiply
    389,436.20x = 584,111.10 × 108,981.80
  4. Step 4: Simplify right side
    389,436.20x = 63,657,479,077.98
  5. Step 5: Solve for x
    x = 63,657,479,077.98/389,436.20
  6. Step 6: Final answer
    x = 163,460.61

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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.