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Finding the Fourth Proportional to 173,207.20, 259,810.80 and 145,213.60

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Solution

The fourth proportional to 173,207.20, 259,810.80 and 145,213.60 is: 217,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,207.20 : 259,810.80 = 145,213.60 : x
  2. Step 2: Convert to fraction form
    173,207.20/259,810.80 = 145,213.60/x
  3. Step 3: Cross multiply
    173,207.20x = 259,810.80 × 145,213.60
  4. Step 4: Simplify right side
    173,207.20x = 37,728,061,586.88
  5. Step 5: Solve for x
    x = 37,728,061,586.88/173,207.20
  6. Step 6: Final answer
    x = 217,820.40

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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.