Home / 278,478.20-384,267.93-155,953.47

Finding the Fourth Proportional to 278,478.20, 384,267.93 and 155,953.47

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Solution

The fourth proportional to 278,478.20, 384,267.93 and 155,953.47 is: 215,197.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,478.20 : 384,267.93 = 155,953.47 : x
  2. Step 2: Convert to fraction form
    278,478.20/384,267.93 = 155,953.47/x
  3. Step 3: Cross multiply
    278,478.20x = 384,267.93 × 155,953.47
  4. Step 4: Simplify right side
    278,478.20x = 59,927,917,093.22
  5. Step 5: Solve for x
    x = 59,927,917,093.22/278,478.20
  6. Step 6: Final answer
    x = 215,197.88

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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.