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Finding the Fourth Proportional to 345,391.44, 518,084.16 and 96,072.72

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Solution

The fourth proportional to 345,391.44, 518,084.16 and 96,072.72 is: 144,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,391.44 : 518,084.16 = 96,072.72 : x
  2. Step 2: Convert to fraction form
    345,391.44/518,084.16 = 96,072.72/x
  3. Step 3: Cross multiply
    345,391.44x = 518,084.16 × 96,072.72
  4. Step 4: Simplify right side
    345,391.44x = 49,773,754,440.12
  5. Step 5: Solve for x
    x = 49,773,754,440.12/345,391.44
  6. Step 6: Final answer
    x = 144,108.25

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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.