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Finding the Fourth Proportional to 235,778.60, 325,374.51 and 128,349.45

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Solution

The fourth proportional to 235,778.60, 325,374.51 and 128,349.45 is: 177,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,778.60 : 325,374.51 = 128,349.45 : x
  2. Step 2: Convert to fraction form
    235,778.60/325,374.51 = 128,349.45/x
  3. Step 3: Cross multiply
    235,778.60x = 325,374.51 × 128,349.45
  4. Step 4: Simplify right side
    235,778.60x = 41,761,639,402.52
  5. Step 5: Solve for x
    x = 41,761,639,402.52/235,778.60
  6. Step 6: Final answer
    x = 177,122.26

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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.