Home / 278,346.34-418,010.56-207,288.28

Finding the Fourth Proportional to 278,346.34, 418,010.56 and 207,288.28

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Solution

The fourth proportional to 278,346.34, 418,010.56 and 207,288.28 is: 311,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,346.34 : 418,010.56 = 207,288.28 : x
  2. Step 2: Convert to fraction form
    278,346.34/418,010.56 = 207,288.28/x
  3. Step 3: Cross multiply
    278,346.34x = 418,010.56 × 207,288.28
  4. Step 4: Simplify right side
    278,346.34x = 86,648,690,004.24
  5. Step 5: Solve for x
    x = 86,648,690,004.24/278,346.34
  6. Step 6: Final answer
    x = 311,298.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.