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Finding the Fourth Proportional to 247,078.80, 370,618.20 and 243,142.20

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Solution

The fourth proportional to 247,078.80, 370,618.20 and 243,142.20 is: 364,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,078.80 : 370,618.20 = 243,142.20 : x
  2. Step 2: Convert to fraction form
    247,078.80/370,618.20 = 243,142.20/x
  3. Step 3: Cross multiply
    247,078.80x = 370,618.20 × 243,142.20
  4. Step 4: Simplify right side
    247,078.80x = 90,112,924,508.04
  5. Step 5: Solve for x
    x = 90,112,924,508.04/247,078.80
  6. Step 6: Final answer
    x = 364,713.30

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1.5x scale

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.