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Finding the Fourth Proportional to 247,505.32, 340,694.40 and 213,621.40

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Solution

The fourth proportional to 247,505.32, 340,694.40 and 213,621.40 is: 294,052.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,505.32 : 340,694.40 = 213,621.40 : x
  2. Step 2: Convert to fraction form
    247,505.32/340,694.40 = 213,621.40/x
  3. Step 3: Cross multiply
    247,505.32x = 340,694.40 × 213,621.40
  4. Step 4: Simplify right side
    247,505.32x = 72,779,614,700.16
  5. Step 5: Solve for x
    x = 72,779,614,700.16/247,505.32
  6. Step 6: Final answer
    x = 294,052.73

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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.