Home / 280,834.40-421,251.60-122,895.20

Finding the Fourth Proportional to 280,834.40, 421,251.60 and 122,895.20

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Solution

The fourth proportional to 280,834.40, 421,251.60 and 122,895.20 is: 184,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,834.40 : 421,251.60 = 122,895.20 : x
  2. Step 2: Convert to fraction form
    280,834.40/421,251.60 = 122,895.20/x
  3. Step 3: Cross multiply
    280,834.40x = 421,251.60 × 122,895.20
  4. Step 4: Simplify right side
    280,834.40x = 51,769,799,632.32
  5. Step 5: Solve for x
    x = 51,769,799,632.32/280,834.40
  6. Step 6: Final answer
    x = 184,342.80

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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.