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Finding the Fourth Proportional to 515,728.84, 773,418.08 and 178,690.84

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Solution

The fourth proportional to 515,728.84, 773,418.08 and 178,690.84 is: 267,975.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,728.84 : 773,418.08 = 178,690.84 : x
  2. Step 2: Convert to fraction form
    515,728.84/773,418.08 = 178,690.84/x
  3. Step 3: Cross multiply
    515,728.84x = 773,418.08 × 178,690.84
  4. Step 4: Simplify right side
    515,728.84x = 138,202,726,386.39
  5. Step 5: Solve for x
    x = 138,202,726,386.39/515,728.84
  6. Step 6: Final answer
    x = 267,975.56

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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.