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Finding the Fourth Proportional to 520,170.76, 780,283.12 and 165,212.56

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Solution

The fourth proportional to 520,170.76, 780,283.12 and 165,212.56 is: 247,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,170.76 : 780,283.12 = 165,212.56 : x
  2. Step 2: Convert to fraction form
    520,170.76/780,283.12 = 165,212.56/x
  3. Step 3: Cross multiply
    520,170.76x = 780,283.12 × 165,212.56
  4. Step 4: Simplify right side
    520,170.76x = 128,912,571,779.99
  5. Step 5: Solve for x
    x = 128,912,571,779.99/520,170.76
  6. Step 6: Final answer
    x = 247,827.41

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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.