Home / 520,320.92-780,315.27-165,251.88

Finding the Fourth Proportional to 520,320.92, 780,315.27 and 165,251.88

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Solution

The fourth proportional to 520,320.92, 780,315.27 and 165,251.88 is: 247,825.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,320.92 : 780,315.27 = 165,251.88 : x
  2. Step 2: Convert to fraction form
    520,320.92/780,315.27 = 165,251.88/x
  3. Step 3: Cross multiply
    520,320.92x = 780,315.27 × 165,251.88
  4. Step 4: Simplify right side
    520,320.92x = 128,948,565,360.21
  5. Step 5: Solve for x
    x = 128,948,565,360.21/520,320.92
  6. Step 6: Final answer
    x = 247,825.07

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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.