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Finding the Fourth Proportional to 247,821.63, 342,023 and 147,219.63

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Solution

The fourth proportional to 247,821.63, 342,023 and 147,219.63 is: 203,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,821.63 : 342,023 = 147,219.63 : x
  2. Step 2: Convert to fraction form
    247,821.63/342,023 = 147,219.63/x
  3. Step 3: Cross multiply
    247,821.63x = 342,023 × 147,219.63
  4. Step 4: Simplify right side
    247,821.63x = 50,352,499,511.49
  5. Step 5: Solve for x
    x = 50,352,499,511.49/247,821.63
  6. Step 6: Final answer
    x = 203,180.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.