Home / 205,284.10-307,862.15-80,663.30

Finding the Fourth Proportional to 205,284.10, 307,862.15 and 80,663.30

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Solution

The fourth proportional to 205,284.10, 307,862.15 and 80,663.30 is: 120,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,284.10 : 307,862.15 = 80,663.30 : x
  2. Step 2: Convert to fraction form
    205,284.10/307,862.15 = 80,663.30/x
  3. Step 3: Cross multiply
    205,284.10x = 307,862.15 × 80,663.30
  4. Step 4: Simplify right side
    205,284.10x = 24,833,176,964.10
  5. Step 5: Solve for x
    x = 24,833,176,964.10/205,284.10
  6. Step 6: Final answer
    x = 120,969.80

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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.