Home / 278,650.88-384,542.80-157,789

Finding the Fourth Proportional to 278,650.88, 384,542.80 and 157,789

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Solution

The fourth proportional to 278,650.88, 384,542.80 and 157,789 is: 217,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,650.88 : 384,542.80 = 157,789 : x
  2. Step 2: Convert to fraction form
    278,650.88/384,542.80 = 157,789/x
  3. Step 3: Cross multiply
    278,650.88x = 384,542.80 × 157,789
  4. Step 4: Simplify right side
    278,650.88x = 60,676,623,869.20
  5. Step 5: Solve for x
    x = 60,676,623,869.20/278,650.88
  6. Step 6: Final answer
    x = 217,751.42

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1.5x scale

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.