Home / 205,610.98-308,417.39-72,419.04

Finding the Fourth Proportional to 205,610.98, 308,417.39 and 72,419.04

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Solution

The fourth proportional to 205,610.98, 308,417.39 and 72,419.04 is: 108,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,610.98 : 308,417.39 = 72,419.04 : x
  2. Step 2: Convert to fraction form
    205,610.98/308,417.39 = 72,419.04/x
  3. Step 3: Cross multiply
    205,610.98x = 308,417.39 × 72,419.04
  4. Step 4: Simplify right side
    205,610.98x = 22,335,291,303.11
  5. Step 5: Solve for x
    x = 22,335,291,303.11/205,610.98
  6. Step 6: Final answer
    x = 108,628.88

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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.