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Finding the Fourth Proportional to 235,445.76, 324,913.47 and 128,015.86

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Solution

The fourth proportional to 235,445.76, 324,913.47 and 128,015.86 is: 176,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,445.76 : 324,913.47 = 128,015.86 : x
  2. Step 2: Convert to fraction form
    235,445.76/324,913.47 = 128,015.86/x
  3. Step 3: Cross multiply
    235,445.76x = 324,913.47 × 128,015.86
  4. Step 4: Simplify right side
    235,445.76x = 41,594,077,287.63
  5. Step 5: Solve for x
    x = 41,594,077,287.63/235,445.76
  6. Step 6: Final answer
    x = 176,660.97

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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.