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Finding the Fourth Proportional to 520,170.01, 780,282 and 165,211.81

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Solution

The fourth proportional to 520,170.01, 780,282 and 165,211.81 is: 247,826.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,170.01 : 780,282 = 165,211.81 : x
  2. Step 2: Convert to fraction form
    520,170.01/780,282 = 165,211.81/x
  3. Step 3: Cross multiply
    520,170.01x = 780,282 × 165,211.81
  4. Step 4: Simplify right side
    520,170.01x = 128,911,801,530.42
  5. Step 5: Solve for x
    x = 128,911,801,530.42/520,170.01
  6. Step 6: Final answer
    x = 247,826.29

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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.