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Finding the Fourth Proportional to 210,652.83, 316,204.16 and 90,768.95

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Solution

The fourth proportional to 210,652.83, 316,204.16 and 90,768.95 is: 136,250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,652.83 : 316,204.16 = 90,768.95 : x
  2. Step 2: Convert to fraction form
    210,652.83/316,204.16 = 90,768.95/x
  3. Step 3: Cross multiply
    210,652.83x = 316,204.16 × 90,768.95
  4. Step 4: Simplify right side
    210,652.83x = 28,701,517,553.97
  5. Step 5: Solve for x
    x = 28,701,517,553.97/210,652.83
  6. Step 6: Final answer
    x = 136,250.33

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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.