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Finding the Fourth Proportional to 250,641.18, 345,903.12 and 143,208.90

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Solution

The fourth proportional to 250,641.18, 345,903.12 and 143,208.90 is: 197,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,641.18 : 345,903.12 = 143,208.90 : x
  2. Step 2: Convert to fraction form
    250,641.18/345,903.12 = 143,208.90/x
  3. Step 3: Cross multiply
    250,641.18x = 345,903.12 × 143,208.90
  4. Step 4: Simplify right side
    250,641.18x = 49,536,405,321.77
  5. Step 5: Solve for x
    x = 49,536,405,321.77/250,641.18
  6. Step 6: Final answer
    x = 197,638.73

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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.