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Finding the Fourth Proportional to 252,100.96, 378,210.40 and 85,888.96

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Solution

The fourth proportional to 252,100.96, 378,210.40 and 85,888.96 is: 128,853.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,100.96 : 378,210.40 = 85,888.96 : x
  2. Step 2: Convert to fraction form
    252,100.96/378,210.40 = 85,888.96/x
  3. Step 3: Cross multiply
    252,100.96x = 378,210.40 × 85,888.96
  4. Step 4: Simplify right side
    252,100.96x = 32,484,097,917.18
  5. Step 5: Solve for x
    x = 32,484,097,917.18/252,100.96
  6. Step 6: Final answer
    x = 128,853.53

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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.