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Finding the Fourth Proportional to 520,093.20, 780,072.84 and 165,111.24

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Solution

The fourth proportional to 520,093.20, 780,072.84 and 165,111.24 is: 247,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,093.20 : 780,072.84 = 165,111.24 : x
  2. Step 2: Convert to fraction form
    520,093.20/780,072.84 = 165,111.24/x
  3. Step 3: Cross multiply
    520,093.20x = 780,072.84 × 165,111.24
  4. Step 4: Simplify right side
    520,093.20x = 128,798,793,902.72
  5. Step 5: Solve for x
    x = 128,798,793,902.72/520,093.20
  6. Step 6: Final answer
    x = 247,645.60

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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.