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Finding the Fourth Proportional to 513,619.20, 770,486.40 and 158,630.40

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Solution

The fourth proportional to 513,619.20, 770,486.40 and 158,630.40 is: 237,963.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,619.20 : 770,486.40 = 158,630.40 : x
  2. Step 2: Convert to fraction form
    513,619.20/770,486.40 = 158,630.40/x
  3. Step 3: Cross multiply
    513,619.20x = 770,486.40 × 158,630.40
  4. Step 4: Simplify right side
    513,619.20x = 122,222,565,826.56
  5. Step 5: Solve for x
    x = 122,222,565,826.56/513,619.20
  6. Step 6: Final answer
    x = 237,963.39

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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.