Home / 278,998.13-385,001.07-151,672.61

Finding the Fourth Proportional to 278,998.13, 385,001.07 and 151,672.61

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Solution

The fourth proportional to 278,998.13, 385,001.07 and 151,672.61 is: 209,299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,998.13 : 385,001.07 = 151,672.61 : x
  2. Step 2: Convert to fraction form
    278,998.13/385,001.07 = 151,672.61/x
  3. Step 3: Cross multiply
    278,998.13x = 385,001.07 × 151,672.61
  4. Step 4: Simplify right side
    278,998.13x = 58,394,117,139.69
  5. Step 5: Solve for x
    x = 58,394,117,139.69/278,998.13
  6. Step 6: Final answer
    x = 209,299.31

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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.