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Finding the Fourth Proportional to 235,502.74, 324,990.72 and 128,070.46

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Solution

The fourth proportional to 235,502.74, 324,990.72 and 128,070.46 is: 176,735.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,502.74 : 324,990.72 = 128,070.46 : x
  2. Step 2: Convert to fraction form
    235,502.74/324,990.72 = 128,070.46/x
  3. Step 3: Cross multiply
    235,502.74x = 324,990.72 × 128,070.46
  4. Step 4: Simplify right side
    235,502.74x = 41,621,711,006.13
  5. Step 5: Solve for x
    x = 41,621,711,006.13/235,502.74
  6. Step 6: Final answer
    x = 176,735.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.