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Finding the Fourth Proportional to 250,493.32, 345,704.70 and 143,079.40

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Solution

The fourth proportional to 250,493.32, 345,704.70 and 143,079.40 is: 197,463.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,493.32 : 345,704.70 = 143,079.40 : x
  2. Step 2: Convert to fraction form
    250,493.32/345,704.70 = 143,079.40/x
  3. Step 3: Cross multiply
    250,493.32x = 345,704.70 × 143,079.40
  4. Step 4: Simplify right side
    250,493.32x = 49,463,221,053.18
  5. Step 5: Solve for x
    x = 49,463,221,053.18/250,493.32
  6. Step 6: Final answer
    x = 197,463.23

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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.