Home / 278,338.11-384,065.76-155,824.13

Finding the Fourth Proportional to 278,338.11, 384,065.76 and 155,824.13

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Solution

The fourth proportional to 278,338.11, 384,065.76 and 155,824.13 is: 215,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,338.11 : 384,065.76 = 155,824.13 : x
  2. Step 2: Convert to fraction form
    278,338.11/384,065.76 = 155,824.13/x
  3. Step 3: Cross multiply
    278,338.11x = 384,065.76 × 155,824.13
  4. Step 4: Simplify right side
    278,338.11x = 59,846,714,459.29
  5. Step 5: Solve for x
    x = 59,846,714,459.29/278,338.11
  6. Step 6: Final answer
    x = 215,014.45

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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.