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Finding the Fourth Proportional to 247,642.36, 371,516.88 and 76,860.52

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Solution

The fourth proportional to 247,642.36, 371,516.88 and 76,860.52 is: 115,307.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,642.36 : 371,516.88 = 76,860.52 : x
  2. Step 2: Convert to fraction form
    247,642.36/371,516.88 = 76,860.52/x
  3. Step 3: Cross multiply
    247,642.36x = 371,516.88 × 76,860.52
  4. Step 4: Simplify right side
    247,642.36x = 28,554,980,585.58
  5. Step 5: Solve for x
    x = 28,554,980,585.58/247,642.36
  6. Step 6: Final answer
    x = 115,307.34

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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.