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Finding the Fourth Proportional to 235,502.87, 324,990.89 and 128,070.59

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Solution

The fourth proportional to 235,502.87, 324,990.89 and 128,070.59 is: 176,735.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,502.87 : 324,990.89 = 128,070.59 : x
  2. Step 2: Convert to fraction form
    235,502.87/324,990.89 = 128,070.59/x
  3. Step 3: Cross multiply
    235,502.87x = 324,990.89 × 128,070.59
  4. Step 4: Simplify right side
    235,502.87x = 41,621,772,761.62
  5. Step 5: Solve for x
    x = 41,621,772,761.62/235,502.87
  6. Step 6: Final answer
    x = 176,735.74

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1.5x scale

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.