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Finding the Fourth Proportional to 235,869.51, 325,500.03 and 128,439.54

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Solution

The fourth proportional to 235,869.51, 325,500.03 and 128,439.54 is: 177,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,869.51 : 325,500.03 = 128,439.54 : x
  2. Step 2: Convert to fraction form
    235,869.51/325,500.03 = 128,439.54/x
  3. Step 3: Cross multiply
    235,869.51x = 325,500.03 × 128,439.54
  4. Step 4: Simplify right side
    235,869.51x = 41,807,074,123.19
  5. Step 5: Solve for x
    x = 41,807,074,123.19/235,869.51
  6. Step 6: Final answer
    x = 177,246.62

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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.