Home / 386,205.90-532,964.80-216,440.04

Finding the Fourth Proportional to 386,205.90, 532,964.80 and 216,440.04

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Solution

The fourth proportional to 386,205.90, 532,964.80 and 216,440.04 is: 298,687.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,205.90 : 532,964.80 = 216,440.04 : x
  2. Step 2: Convert to fraction form
    386,205.90/532,964.80 = 216,440.04/x
  3. Step 3: Cross multiply
    386,205.90x = 532,964.80 × 216,440.04
  4. Step 4: Simplify right side
    386,205.90x = 115,354,922,630.59
  5. Step 5: Solve for x
    x = 115,354,922,630.59/386,205.90
  6. Step 6: Final answer
    x = 298,687.62

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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.