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Finding the Fourth Proportional to 321,959.78, 444,282.27 and 178,708.55

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Solution

The fourth proportional to 321,959.78, 444,282.27 and 178,708.55 is: 246,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,959.78 : 444,282.27 = 178,708.55 : x
  2. Step 2: Convert to fraction form
    321,959.78/444,282.27 = 178,708.55/x
  3. Step 3: Cross multiply
    321,959.78x = 444,282.27 × 178,708.55
  4. Step 4: Simplify right side
    321,959.78x = 79,397,038,041.00
  5. Step 5: Solve for x
    x = 79,397,038,041.00/321,959.78
  6. Step 6: Final answer
    x = 246,605.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.