Home / 280,509,401.76-420,764,104.20-76,037,476.08

Finding the Fourth Proportional to 280,509,401.76, 420,764,104.20 and 76,037,476.08

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Solution

The fourth proportional to 280,509,401.76, 420,764,104.20 and 76,037,476.08 is: 114,056,214.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,509,401.76 : 420,764,104.20 = 76,037,476.08 : x
  2. Step 2: Convert to fraction form
    280,509,401.76/420,764,104.20 = 76,037,476.08/x
  3. Step 3: Cross multiply
    280,509,401.76x = 420,764,104.20 × 76,037,476.08
  4. Step 4: Simplify right side
    280,509,401.76x = 31,993,840,508,430,124
  5. Step 5: Solve for x
    x = 31,993,840,508,430,124/280,509,401.76
  6. Step 6: Final answer
    x = 114,056,214.54

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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.