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Finding the Fourth Proportional to 278,586.52, 384,483.40 and 163,859.69

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Solution

The fourth proportional to 278,586.52, 384,483.40 and 163,859.69 is: 226,146.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,586.52 : 384,483.40 = 163,859.69 : x
  2. Step 2: Convert to fraction form
    278,586.52/384,483.40 = 163,859.69/x
  3. Step 3: Cross multiply
    278,586.52x = 384,483.40 × 163,859.69
  4. Step 4: Simplify right side
    278,586.52x = 63,001,330,734.15
  5. Step 5: Solve for x
    x = 63,001,330,734.15/278,586.52
  6. Step 6: Final answer
    x = 226,146.37

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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.