Home / 260,048.30-390,072.45-82,569.20

Finding the Fourth Proportional to 260,048.30, 390,072.45 and 82,569.20

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Solution

The fourth proportional to 260,048.30, 390,072.45 and 82,569.20 is: 123,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,048.30 : 390,072.45 = 82,569.20 : x
  2. Step 2: Convert to fraction form
    260,048.30/390,072.45 = 82,569.20/x
  3. Step 3: Cross multiply
    260,048.30x = 390,072.45 × 82,569.20
  4. Step 4: Simplify right side
    260,048.30x = 32,207,970,138.54
  5. Step 5: Solve for x
    x = 32,207,970,138.54/260,048.30
  6. Step 6: Final answer
    x = 123,853.80

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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.