Home / 278,972.96-385,024.75-170,140.47

Finding the Fourth Proportional to 278,972.96, 385,024.75 and 170,140.47

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Solution

The fourth proportional to 278,972.96, 385,024.75 and 170,140.47 is: 234,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,972.96 : 385,024.75 = 170,140.47 : x
  2. Step 2: Convert to fraction form
    278,972.96/385,024.75 = 170,140.47/x
  3. Step 3: Cross multiply
    278,972.96x = 385,024.75 × 170,140.47
  4. Step 4: Simplify right side
    278,972.96x = 65,508,292,701.72
  5. Step 5: Solve for x
    x = 65,508,292,701.72/278,972.96
  6. Step 6: Final answer
    x = 234,819.50

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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.