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Finding the Fourth Proportional to 235,683.72, 325,250.38 and 128,260.68

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Solution

The fourth proportional to 235,683.72, 325,250.38 and 128,260.68 is: 177,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,683.72 : 325,250.38 = 128,260.68 : x
  2. Step 2: Convert to fraction form
    235,683.72/325,250.38 = 128,260.68/x
  3. Step 3: Cross multiply
    235,683.72x = 325,250.38 × 128,260.68
  4. Step 4: Simplify right side
    235,683.72x = 41,716,834,909.06
  5. Step 5: Solve for x
    x = 41,716,834,909.06/235,683.72
  6. Step 6: Final answer
    x = 177,003.46

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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.