Home / 286,228.50-429,342.78-89,236.50

Finding the Fourth Proportional to 286,228.50, 429,342.78 and 89,236.50

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Solution

The fourth proportional to 286,228.50, 429,342.78 and 89,236.50 is: 133,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,228.50 : 429,342.78 = 89,236.50 : x
  2. Step 2: Convert to fraction form
    286,228.50/429,342.78 = 89,236.50/x
  3. Step 3: Cross multiply
    286,228.50x = 429,342.78 × 89,236.50
  4. Step 4: Simplify right side
    286,228.50x = 38,313,046,987.47
  5. Step 5: Solve for x
    x = 38,313,046,987.47/286,228.50
  6. Step 6: Final answer
    x = 133,854.76

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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.