Home / 278,839.18-384,797.30-151,514.78

Finding the Fourth Proportional to 278,839.18, 384,797.30 and 151,514.78

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Solution

The fourth proportional to 278,839.18, 384,797.30 and 151,514.78 is: 209,089.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,839.18 : 384,797.30 = 151,514.78 : x
  2. Step 2: Convert to fraction form
    278,839.18/384,797.30 = 151,514.78/x
  3. Step 3: Cross multiply
    278,839.18x = 384,797.30 × 151,514.78
  4. Step 4: Simplify right side
    278,839.18x = 58,302,478,254.09
  5. Step 5: Solve for x
    x = 58,302,478,254.09/278,839.18
  6. Step 6: Final answer
    x = 209,089.98

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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.