Home / 268,454.19-402,683.71-81,465.69

Finding the Fourth Proportional to 268,454.19, 402,683.71 and 81,465.69

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Solution

The fourth proportional to 268,454.19, 402,683.71 and 81,465.69 is: 122,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,454.19 : 402,683.71 = 81,465.69 : x
  2. Step 2: Convert to fraction form
    268,454.19/402,683.71 = 81,465.69/x
  3. Step 3: Cross multiply
    268,454.19x = 402,683.71 × 81,465.69
  4. Step 4: Simplify right side
    268,454.19x = 32,804,906,286.91
  5. Step 5: Solve for x
    x = 32,804,906,286.91/268,454.19
  6. Step 6: Final answer
    x = 122,199.27

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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.