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Finding the Fourth Proportional to 278,958.33, 384,962.75 and 151,633.93

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Solution

The fourth proportional to 278,958.33, 384,962.75 and 151,633.93 is: 209,254.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,958.33 : 384,962.75 = 151,633.93 : x
  2. Step 2: Convert to fraction form
    278,958.33/384,962.75 = 151,633.93/x
  3. Step 3: Cross multiply
    278,958.33x = 384,962.75 × 151,633.93
  4. Step 4: Simplify right side
    278,958.33x = 58,373,412,761.29
  5. Step 5: Solve for x
    x = 58,373,412,761.29/278,958.33
  6. Step 6: Final answer
    x = 209,254.95

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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.