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Finding the Fourth Proportional to 260,358.33, 390,540.74 and 82,864.65

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Solution

The fourth proportional to 260,358.33, 390,540.74 and 82,864.65 is: 124,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,358.33 : 390,540.74 = 82,864.65 : x
  2. Step 2: Convert to fraction form
    260,358.33/390,540.74 = 82,864.65/x
  3. Step 3: Cross multiply
    260,358.33x = 390,540.74 × 82,864.65
  4. Step 4: Simplify right side
    260,358.33x = 32,362,021,316.52
  5. Step 5: Solve for x
    x = 32,362,021,316.52/260,358.33
  6. Step 6: Final answer
    x = 124,298.01

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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.