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Finding the Fourth Proportional to 230,806.40, 346,364.40 and 81,046.40

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Solution

The fourth proportional to 230,806.40, 346,364.40 and 81,046.40 is: 121,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,806.40 : 346,364.40 = 81,046.40 : x
  2. Step 2: Convert to fraction form
    230,806.40/346,364.40 = 81,046.40/x
  3. Step 3: Cross multiply
    230,806.40x = 346,364.40 × 81,046.40
  4. Step 4: Simplify right side
    230,806.40x = 28,071,587,708.16
  5. Step 5: Solve for x
    x = 28,071,587,708.16/230,806.40
  6. Step 6: Final answer
    x = 121,623.96

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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.