Home / 278,905.12-384,892.04-151,580.72

Finding the Fourth Proportional to 278,905.12, 384,892.04 and 151,580.72

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Solution

The fourth proportional to 278,905.12, 384,892.04 and 151,580.72 is: 209,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,905.12 : 384,892.04 = 151,580.72 : x
  2. Step 2: Convert to fraction form
    278,905.12/384,892.04 = 151,580.72/x
  3. Step 3: Cross multiply
    278,905.12x = 384,892.04 × 151,580.72
  4. Step 4: Simplify right side
    278,905.12x = 58,342,212,545.47
  5. Step 5: Solve for x
    x = 58,342,212,545.47/278,905.12
  6. Step 6: Final answer
    x = 209,183.01

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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.