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Finding the Fourth Proportional to 278,685, 384,586.02 and 163,967.94

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Solution

The fourth proportional to 278,685, 384,586.02 and 163,967.94 is: 226,276.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,685 : 384,586.02 = 163,967.94 : x
  2. Step 2: Convert to fraction form
    278,685/384,586.02 = 163,967.94/x
  3. Step 3: Cross multiply
    278,685x = 384,586.02 × 163,967.94
  4. Step 4: Simplify right side
    278,685x = 63,059,777,452.20
  5. Step 5: Solve for x
    x = 63,059,777,452.20/278,685
  6. Step 6: Final answer
    x = 226,276.18

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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.