Home / 280,410,863.73-420,240,312.28-218,237,249.04

Finding the Fourth Proportional to 280,410,863.73, 420,240,312.28 and 218,237,249.04

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Solution

The fourth proportional to 280,410,863.73, 420,240,312.28 and 218,237,249.04 is: 327,063,254.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,410,863.73 : 420,240,312.28 = 218,237,249.04 : x
  2. Step 2: Convert to fraction form
    280,410,863.73/420,240,312.28 = 218,237,249.04/x
  3. Step 3: Cross multiply
    280,410,863.73x = 420,240,312.28 × 218,237,249.04
  4. Step 4: Simplify right side
    280,410,863.73x = 91,712,089,687,697,728
  5. Step 5: Solve for x
    x = 91,712,089,687,697,728/280,410,863.73
  6. Step 6: Final answer
    x = 327,063,254.50

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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.