Home / 207,259,310.40-311,088,031.20-105,138,657.60

Finding the Fourth Proportional to 207,259,310.40, 311,088,031.20 and 105,138,657.60

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Solution

The fourth proportional to 207,259,310.40, 311,088,031.20 and 105,138,657.60 is: 157,808,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,259,310.40 : 311,088,031.20 = 105,138,657.60 : x
  2. Step 2: Convert to fraction form
    207,259,310.40/311,088,031.20 = 105,138,657.60/x
  3. Step 3: Cross multiply
    207,259,310.40x = 311,088,031.20 × 105,138,657.60
  4. Step 4: Simplify right side
    207,259,310.40x = 32,707,377,995,794,916
  5. Step 5: Solve for x
    x = 32,707,377,995,794,916/207,259,310.40
  6. Step 6: Final answer
    x = 157,808,968.55

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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.