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Finding the Fourth Proportional to 372,464.40, 558,696.60 and 91,981.65

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Solution

The fourth proportional to 372,464.40, 558,696.60 and 91,981.65 is: 137,972.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,464.40 : 558,696.60 = 91,981.65 : x
  2. Step 2: Convert to fraction form
    372,464.40/558,696.60 = 91,981.65/x
  3. Step 3: Cross multiply
    372,464.40x = 558,696.60 × 91,981.65
  4. Step 4: Simplify right side
    372,464.40x = 51,389,835,117.39
  5. Step 5: Solve for x
    x = 51,389,835,117.39/372,464.40
  6. Step 6: Final answer
    x = 137,972.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.