Home / 280,509,402.76-420,764,105.70-76,037,477.08

Finding the Fourth Proportional to 280,509,402.76, 420,764,105.70 and 76,037,477.08

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Solution

The fourth proportional to 280,509,402.76, 420,764,105.70 and 76,037,477.08 is: 114,056,216.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,509,402.76 : 420,764,105.70 = 76,037,477.08 : x
  2. Step 2: Convert to fraction form
    280,509,402.76/420,764,105.70 = 76,037,477.08/x
  3. Step 3: Cross multiply
    280,509,402.76x = 420,764,105.70 × 76,037,477.08
  4. Step 4: Simplify right side
    280,509,402.76x = 31,993,841,043,250,444
  5. Step 5: Solve for x
    x = 31,993,841,043,250,444/280,509,402.76
  6. Step 6: Final answer
    x = 114,056,216.04

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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.