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Finding the Fourth Proportional to 260,359.20, 390,101.40 and 126,952.20

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Solution

The fourth proportional to 260,359.20, 390,101.40 and 126,952.20 is: 190,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,359.20 : 390,101.40 = 126,952.20 : x
  2. Step 2: Convert to fraction form
    260,359.20/390,101.40 = 126,952.20/x
  3. Step 3: Cross multiply
    260,359.20x = 390,101.40 × 126,952.20
  4. Step 4: Simplify right side
    260,359.20x = 49,524,230,953.08
  5. Step 5: Solve for x
    x = 49,524,230,953.08/260,359.20
  6. Step 6: Final answer
    x = 190,215.02

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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.