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Finding the Fourth Proportional to 520,176.04, 780,291 and 165,217.84

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Solution

The fourth proportional to 520,176.04, 780,291 and 165,217.84 is: 247,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,176.04 : 780,291 = 165,217.84 : x
  2. Step 2: Convert to fraction form
    520,176.04/780,291 = 165,217.84/x
  3. Step 3: Cross multiply
    520,176.04x = 780,291 × 165,217.84
  4. Step 4: Simplify right side
    520,176.04x = 128,917,993,591.44
  5. Step 5: Solve for x
    x = 128,917,993,591.44/520,176.04
  6. Step 6: Final answer
    x = 247,835.32

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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.