Home / 389,343.12-584,015.76-108,862.80

Finding the Fourth Proportional to 389,343.12, 584,015.76 and 108,862.80

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Solution

The fourth proportional to 389,343.12, 584,015.76 and 108,862.80 is: 163,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,343.12 : 584,015.76 = 108,862.80 : x
  2. Step 2: Convert to fraction form
    389,343.12/584,015.76 = 108,862.80/x
  3. Step 3: Cross multiply
    389,343.12x = 584,015.76 × 108,862.80
  4. Step 4: Simplify right side
    389,343.12x = 63,577,590,877.73
  5. Step 5: Solve for x
    x = 63,577,590,877.73/389,343.12
  6. Step 6: Final answer
    x = 163,294.50

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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.