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Finding the Fourth Proportional to 278,959.33, 384,964.13 and 151,634.93

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Solution

The fourth proportional to 278,959.33, 384,964.13 and 151,634.93 is: 209,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,959.33 : 384,964.13 = 151,634.93 : x
  2. Step 2: Convert to fraction form
    278,959.33/384,964.13 = 151,634.93/x
  3. Step 3: Cross multiply
    278,959.33x = 384,964.13 × 151,634.93
  4. Step 4: Simplify right side
    278,959.33x = 58,374,008,905.06
  5. Step 5: Solve for x
    x = 58,374,008,905.06/278,959.33
  6. Step 6: Final answer
    x = 209,256.34

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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.