Home / 278,387.20-384,175.40-151,062.80

Finding the Fourth Proportional to 278,387.20, 384,175.40 and 151,062.80

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Solution

The fourth proportional to 278,387.20, 384,175.40 and 151,062.80 is: 208,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,387.20 : 384,175.40 = 151,062.80 : x
  2. Step 2: Convert to fraction form
    278,387.20/384,175.40 = 151,062.80/x
  3. Step 3: Cross multiply
    278,387.20x = 384,175.40 × 151,062.80
  4. Step 4: Simplify right side
    278,387.20x = 58,034,611,615.12
  5. Step 5: Solve for x
    x = 58,034,611,615.12/278,387.20
  6. Step 6: Final answer
    x = 208,467.24

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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.