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Finding the Fourth Proportional to 278,844.82, 384,774.62 and 157,960.22

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Solution

The fourth proportional to 278,844.82, 384,774.62 and 157,960.22 is: 217,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,844.82 : 384,774.62 = 157,960.22 : x
  2. Step 2: Convert to fraction form
    278,844.82/384,774.62 = 157,960.22/x
  3. Step 3: Cross multiply
    278,844.82x = 384,774.62 × 157,960.22
  4. Step 4: Simplify right side
    278,844.82x = 60,779,080,911.94
  5. Step 5: Solve for x
    x = 60,779,080,911.94/278,844.82
  6. Step 6: Final answer
    x = 217,967.40

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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.