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Finding the Fourth Proportional to 518,074.20, 777,136.90 and 269,242.20

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Solution

The fourth proportional to 518,074.20, 777,136.90 and 269,242.20 is: 403,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,074.20 : 777,136.90 = 269,242.20 : x
  2. Step 2: Convert to fraction form
    518,074.20/777,136.90 = 269,242.20/x
  3. Step 3: Cross multiply
    518,074.20x = 777,136.90 × 269,242.20
  4. Step 4: Simplify right side
    518,074.20x = 209,238,048,657.18
  5. Step 5: Solve for x
    x = 209,238,048,657.18/518,074.20
  6. Step 6: Final answer
    x = 403,876.60

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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.