Home / 268,853.38-403,316.97-91,312.72

Finding the Fourth Proportional to 268,853.38, 403,316.97 and 91,312.72

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Solution

The fourth proportional to 268,853.38, 403,316.97 and 91,312.72 is: 136,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,853.38 : 403,316.97 = 91,312.72 : x
  2. Step 2: Convert to fraction form
    268,853.38/403,316.97 = 91,312.72/x
  3. Step 3: Cross multiply
    268,853.38x = 403,316.97 × 91,312.72
  4. Step 4: Simplify right side
    268,853.38x = 36,827,968,715.78
  5. Step 5: Solve for x
    x = 36,827,968,715.78/268,853.38
  6. Step 6: Final answer
    x = 136,981.61

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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.