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Finding the Fourth Proportional to 235,463.32, 324,937.78 and 128,033.43

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Solution

The fourth proportional to 235,463.32, 324,937.78 and 128,033.43 is: 176,685.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,463.32 : 324,937.78 = 128,033.43 : x
  2. Step 2: Convert to fraction form
    235,463.32/324,937.78 = 128,033.43/x
  3. Step 3: Cross multiply
    235,463.32x = 324,937.78 × 128,033.43
  4. Step 4: Simplify right side
    235,463.32x = 41,602,896,971.39
  5. Step 5: Solve for x
    x = 41,602,896,971.39/235,463.32
  6. Step 6: Final answer
    x = 176,685.26

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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.