Home / 280,256,002.20-420,384,003.30-124,809,509.70

Finding the Fourth Proportional to 280,256,002.20, 420,384,003.30 and 124,809,509.70

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Solution

The fourth proportional to 280,256,002.20, 420,384,003.30 and 124,809,509.70 is: 187,214,264.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,256,002.20 : 420,384,003.30 = 124,809,509.70 : x
  2. Step 2: Convert to fraction form
    280,256,002.20/420,384,003.30 = 124,809,509.70/x
  3. Step 3: Cross multiply
    280,256,002.20x = 420,384,003.30 × 124,809,509.70
  4. Step 4: Simplify right side
    280,256,002.20x = 52,467,921,337,596,184
  5. Step 5: Solve for x
    x = 52,467,921,337,596,184/280,256,002.20
  6. Step 6: Final answer
    x = 187,214,264.55

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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.