Home / 280,869.45-421,327.38-91,325.52

Finding the Fourth Proportional to 280,869.45, 421,327.38 and 91,325.52

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Solution

The fourth proportional to 280,869.45, 421,327.38 and 91,325.52 is: 136,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,869.45 : 421,327.38 = 91,325.52 : x
  2. Step 2: Convert to fraction form
    280,869.45/421,327.38 = 91,325.52/x
  3. Step 3: Cross multiply
    280,869.45x = 421,327.38 × 91,325.52
  4. Step 4: Simplify right side
    280,869.45x = 38,477,942,068.74
  5. Step 5: Solve for x
    x = 38,477,942,068.74/280,869.45
  6. Step 6: Final answer
    x = 136,995.83

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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.