Home / 280,373,407.20-420,560,110.80-98,596,965.60

Finding the Fourth Proportional to 280,373,407.20, 420,560,110.80 and 98,596,965.60

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Solution

The fourth proportional to 280,373,407.20, 420,560,110.80 and 98,596,965.60 is: 147,895,448.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,373,407.20 : 420,560,110.80 = 98,596,965.60 : x
  2. Step 2: Convert to fraction form
    280,373,407.20/420,560,110.80 = 98,596,965.60/x
  3. Step 3: Cross multiply
    280,373,407.20x = 420,560,110.80 × 98,596,965.60
  4. Step 4: Simplify right side
    280,373,407.20x = 41,465,950,777,279,784
  5. Step 5: Solve for x
    x = 41,465,950,777,279,784/280,373,407.20
  6. Step 6: Final answer
    x = 147,895,448.40

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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.