Home / 312,728.18-469,092.38-76,069.40

Finding the Fourth Proportional to 312,728.18, 469,092.38 and 76,069.40

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Solution

The fourth proportional to 312,728.18, 469,092.38 and 76,069.40 is: 114,104.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,728.18 : 469,092.38 = 76,069.40 : x
  2. Step 2: Convert to fraction form
    312,728.18/469,092.38 = 76,069.40/x
  3. Step 3: Cross multiply
    312,728.18x = 469,092.38 × 76,069.40
  4. Step 4: Simplify right side
    312,728.18x = 35,683,575,891.17
  5. Step 5: Solve for x
    x = 35,683,575,891.17/312,728.18
  6. Step 6: Final answer
    x = 114,104.13

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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.