Home / 278,979.90-384,994.74-151,655.70

Finding the Fourth Proportional to 278,979.90, 384,994.74 and 151,655.70

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Solution

The fourth proportional to 278,979.90, 384,994.74 and 151,655.70 is: 209,286.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,979.90 : 384,994.74 = 151,655.70 : x
  2. Step 2: Convert to fraction form
    278,979.90/384,994.74 = 151,655.70/x
  3. Step 3: Cross multiply
    278,979.90x = 384,994.74 × 151,655.70
  4. Step 4: Simplify right side
    278,979.90x = 58,386,646,791.02
  5. Step 5: Solve for x
    x = 58,386,646,791.02/278,979.90
  6. Step 6: Final answer
    x = 209,286.21

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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.