Home / 272,296.80-408,465-72,616.38

Finding the Fourth Proportional to 272,296.80, 408,465 and 72,616.38

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Solution

The fourth proportional to 272,296.80, 408,465 and 72,616.38 is: 108,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,296.80 : 408,465 = 72,616.38 : x
  2. Step 2: Convert to fraction form
    272,296.80/408,465 = 72,616.38/x
  3. Step 3: Cross multiply
    272,296.80x = 408,465 × 72,616.38
  4. Step 4: Simplify right side
    272,296.80x = 29,661,249,656.70
  5. Step 5: Solve for x
    x = 29,661,249,656.70/272,296.80
  6. Step 6: Final answer
    x = 108,929.85

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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.