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Finding the Fourth Proportional to 512,520.96, 768,908.34 and 152,690.21

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Solution

The fourth proportional to 512,520.96, 768,908.34 and 152,690.21 is: 229,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,520.96 : 768,908.34 = 152,690.21 : x
  2. Step 2: Convert to fraction form
    512,520.96/768,908.34 = 152,690.21/x
  3. Step 3: Cross multiply
    512,520.96x = 768,908.34 × 152,690.21
  4. Step 4: Simplify right side
    512,520.96x = 117,404,772,060.81
  5. Step 5: Solve for x
    x = 117,404,772,060.81/512,520.96
  6. Step 6: Final answer
    x = 229,073.11

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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.