Home / 278,823.23-384,778.40-151,498.82

Finding the Fourth Proportional to 278,823.23, 384,778.40 and 151,498.82

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Solution

The fourth proportional to 278,823.23, 384,778.40 and 151,498.82 is: 209,069.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,823.23 : 384,778.40 = 151,498.82 : x
  2. Step 2: Convert to fraction form
    278,823.23/384,778.40 = 151,498.82/x
  3. Step 3: Cross multiply
    278,823.23x = 384,778.40 × 151,498.82
  4. Step 4: Simplify right side
    278,823.23x = 58,293,474,618.12
  5. Step 5: Solve for x
    x = 58,293,474,618.12/278,823.23
  6. Step 6: Final answer
    x = 209,069.65

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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.