Home / 280,509,396.76-420,764,096.70-76,037,471.08

Finding the Fourth Proportional to 280,509,396.76, 420,764,096.70 and 76,037,471.08

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Solution

The fourth proportional to 280,509,396.76, 420,764,096.70 and 76,037,471.08 is: 114,056,207.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,509,396.76 : 420,764,096.70 = 76,037,471.08 : x
  2. Step 2: Convert to fraction form
    280,509,396.76/420,764,096.70 = 76,037,471.08/x
  3. Step 3: Cross multiply
    280,509,396.76x = 420,764,096.70 × 76,037,471.08
  4. Step 4: Simplify right side
    280,509,396.76x = 31,993,837,834,328,572
  5. Step 5: Solve for x
    x = 31,993,837,834,328,572/280,509,396.76
  6. Step 6: Final answer
    x = 114,056,207.04

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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.