Home / 280,367,998.80-420,551,998.20-159,435,646.80

Finding the Fourth Proportional to 280,367,998.80, 420,551,998.20 and 159,435,646.80

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Solution

The fourth proportional to 280,367,998.80, 420,551,998.20 and 159,435,646.80 is: 239,153,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,367,998.80 : 420,551,998.20 = 159,435,646.80 : x
  2. Step 2: Convert to fraction form
    280,367,998.80/420,551,998.20 = 159,435,646.80/x
  3. Step 3: Cross multiply
    280,367,998.80x = 420,551,998.20 × 159,435,646.80
  4. Step 4: Simplify right side
    280,367,998.80x = 67,050,979,846,049,440
  5. Step 5: Solve for x
    x = 67,050,979,846,049,440/280,367,998.80
  6. Step 6: Final answer
    x = 239,153,470.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.