Home / 280,799.02-421,272.42-100,902.61

Finding the Fourth Proportional to 280,799.02, 421,272.42 and 100,902.61

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Solution

The fourth proportional to 280,799.02, 421,272.42 and 100,902.61 is: 151,380.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,799.02 : 421,272.42 = 100,902.61 : x
  2. Step 2: Convert to fraction form
    280,799.02/421,272.42 = 100,902.61/x
  3. Step 3: Cross multiply
    280,799.02x = 421,272.42 × 100,902.61
  4. Step 4: Simplify right side
    280,799.02x = 42,507,486,699.02
  5. Step 5: Solve for x
    x = 42,507,486,699.02/280,799.02
  6. Step 6: Final answer
    x = 151,380.47

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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.