Home / 278,307,847.72-384,195,590.12-160,810,449.86

Finding the Fourth Proportional to 278,307,847.72, 384,195,590.12 and 160,810,449.86

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Solution

The fourth proportional to 278,307,847.72, 384,195,590.12 and 160,810,449.86 is: 221,993,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,307,847.72 : 384,195,590.12 = 160,810,449.86 : x
  2. Step 2: Convert to fraction form
    278,307,847.72/384,195,590.12 = 160,810,449.86/x
  3. Step 3: Cross multiply
    278,307,847.72x = 384,195,590.12 × 160,810,449.86
  4. Step 4: Simplify right side
    278,307,847.72x = 61,782,665,680,621,328
  5. Step 5: Solve for x
    x = 61,782,665,680,621,328/278,307,847.72
  6. Step 6: Final answer
    x = 221,993,976.05

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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.