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Finding the Fourth Proportional to 247,386.72, 371,080.89 and 105,211.74

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Solution

The fourth proportional to 247,386.72, 371,080.89 and 105,211.74 is: 157,817.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,386.72 : 371,080.89 = 105,211.74 : x
  2. Step 2: Convert to fraction form
    247,386.72/371,080.89 = 105,211.74/x
  3. Step 3: Cross multiply
    247,386.72x = 371,080.89 × 105,211.74
  4. Step 4: Simplify right side
    247,386.72x = 39,042,066,117.65
  5. Step 5: Solve for x
    x = 39,042,066,117.65/247,386.72
  6. Step 6: Final answer
    x = 157,817.95

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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.