Home / 228,931.92-343,204.09-86,698.78

Finding the Fourth Proportional to 228,931.92, 343,204.09 and 86,698.78

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Solution

The fourth proportional to 228,931.92, 343,204.09 and 86,698.78 is: 129,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,931.92 : 343,204.09 = 86,698.78 : x
  2. Step 2: Convert to fraction form
    228,931.92/343,204.09 = 86,698.78/x
  3. Step 3: Cross multiply
    228,931.92x = 343,204.09 × 86,698.78
  4. Step 4: Simplify right side
    228,931.92x = 29,755,375,784.51
  5. Step 5: Solve for x
    x = 29,755,375,784.51/228,931.92
  6. Step 6: Final answer
    x = 129,974.78

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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.