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Finding the Fourth Proportional to 215,391.84, 322,877.76 and 103,042.72

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Solution

The fourth proportional to 215,391.84, 322,877.76 and 103,042.72 is: 154,463.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,391.84 : 322,877.76 = 103,042.72 : x
  2. Step 2: Convert to fraction form
    215,391.84/322,877.76 = 103,042.72/x
  3. Step 3: Cross multiply
    215,391.84x = 322,877.76 × 103,042.72
  4. Step 4: Simplify right side
    215,391.84x = 33,270,202,617.91
  5. Step 5: Solve for x
    x = 33,270,202,617.91/215,391.84
  6. Step 6: Final answer
    x = 154,463.62

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1.5x scale

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.