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Finding the Fourth Proportional to 260,040.20, 390,060.30 and 207,552.20

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Solution

The fourth proportional to 260,040.20, 390,060.30 and 207,552.20 is: 311,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,040.20 : 390,060.30 = 207,552.20 : x
  2. Step 2: Convert to fraction form
    260,040.20/390,060.30 = 207,552.20/x
  3. Step 3: Cross multiply
    260,040.20x = 390,060.30 × 207,552.20
  4. Step 4: Simplify right side
    260,040.20x = 80,957,873,397.66
  5. Step 5: Solve for x
    x = 80,957,873,397.66/260,040.20
  6. Step 6: Final answer
    x = 311,328.30

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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.