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Finding the Fourth Proportional to 247,730.70, 371,574.45 and 81,518.70

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Solution

The fourth proportional to 247,730.70, 371,574.45 and 81,518.70 is: 122,270.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,730.70 : 371,574.45 = 81,518.70 : x
  2. Step 2: Convert to fraction form
    247,730.70/371,574.45 = 81,518.70/x
  3. Step 3: Cross multiply
    247,730.70x = 371,574.45 × 81,518.70
  4. Step 4: Simplify right side
    247,730.70x = 30,290,266,117.22
  5. Step 5: Solve for x
    x = 30,290,266,117.22/247,730.70
  6. Step 6: Final answer
    x = 122,270.94

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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.