Home / 261,385.12-361,201.80-213,621.04

Finding the Fourth Proportional to 261,385.12, 361,201.80 and 213,621.04

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Solution

The fourth proportional to 261,385.12, 361,201.80 and 213,621.04 is: 295,197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,385.12 : 361,201.80 = 213,621.04 : x
  2. Step 2: Convert to fraction form
    261,385.12/361,201.80 = 213,621.04/x
  3. Step 3: Cross multiply
    261,385.12x = 361,201.80 × 213,621.04
  4. Step 4: Simplify right side
    261,385.12x = 77,160,304,165.87
  5. Step 5: Solve for x
    x = 77,160,304,165.87/261,385.12
  6. Step 6: Final answer
    x = 295,197.77

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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.