Home / 268,367.29-402,488.62-78,776.75

Finding the Fourth Proportional to 268,367.29, 402,488.62 and 78,776.75

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Solution

The fourth proportional to 268,367.29, 402,488.62 and 78,776.75 is: 118,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,367.29 : 402,488.62 = 78,776.75 : x
  2. Step 2: Convert to fraction form
    268,367.29/402,488.62 = 78,776.75/x
  3. Step 3: Cross multiply
    268,367.29x = 402,488.62 × 78,776.75
  4. Step 4: Simplify right side
    268,367.29x = 31,706,746,204.86
  5. Step 5: Solve for x
    x = 31,706,746,204.86/268,367.29
  6. Step 6: Final answer
    x = 118,146.84

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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.