Home / 280,671,438.60-420,974,998.08-73,429,856.04

Finding the Fourth Proportional to 280,671,438.60, 420,974,998.08 and 73,429,856.04

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Solution

The fourth proportional to 280,671,438.60, 420,974,998.08 and 73,429,856.04 is: 110,136,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,671,438.60 : 420,974,998.08 = 73,429,856.04 : x
  2. Step 2: Convert to fraction form
    280,671,438.60/420,974,998.08 = 73,429,856.04/x
  3. Step 3: Cross multiply
    280,671,438.60x = 420,974,998.08 × 73,429,856.04
  4. Step 4: Simplify right side
    280,671,438.60x = 30,912,133,505,453,676
  5. Step 5: Solve for x
    x = 30,912,133,505,453,676/280,671,438.60
  6. Step 6: Final answer
    x = 110,136,370.34

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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.