Home / 278,459.76-384,183-157,589.04

Finding the Fourth Proportional to 278,459.76, 384,183 and 157,589.04

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Solution

The fourth proportional to 278,459.76, 384,183 and 157,589.04 is: 217,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,459.76 : 384,183 = 157,589.04 : x
  2. Step 2: Convert to fraction form
    278,459.76/384,183 = 157,589.04/x
  3. Step 3: Cross multiply
    278,459.76x = 384,183 × 157,589.04
  4. Step 4: Simplify right side
    278,459.76x = 60,543,030,154.32
  5. Step 5: Solve for x
    x = 60,543,030,154.32/278,459.76
  6. Step 6: Final answer
    x = 217,421.11

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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.