Home / 278,999.13-385,002.45-151,673.61

Finding the Fourth Proportional to 278,999.13, 385,002.45 and 151,673.61

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Solution

The fourth proportional to 278,999.13, 385,002.45 and 151,673.61 is: 209,300.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,999.13 : 385,002.45 = 151,673.61 : x
  2. Step 2: Convert to fraction form
    278,999.13/385,002.45 = 151,673.61/x
  3. Step 3: Cross multiply
    278,999.13x = 385,002.45 × 151,673.61
  4. Step 4: Simplify right side
    278,999.13x = 58,394,711,450.34
  5. Step 5: Solve for x
    x = 58,394,711,450.34/278,999.13
  6. Step 6: Final answer
    x = 209,300.69

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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.