Home / 280,448.34-420,322.50-140,247.06

Finding the Fourth Proportional to 280,448.34, 420,322.50 and 140,247.06

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Solution

The fourth proportional to 280,448.34, 420,322.50 and 140,247.06 is: 210,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,448.34 : 420,322.50 = 140,247.06 : x
  2. Step 2: Convert to fraction form
    280,448.34/420,322.50 = 140,247.06/x
  3. Step 3: Cross multiply
    280,448.34x = 420,322.50 × 140,247.06
  4. Step 4: Simplify right side
    280,448.34x = 58,948,994,876.85
  5. Step 5: Solve for x
    x = 58,948,994,876.85/280,448.34
  6. Step 6: Final answer
    x = 210,195.56

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1.5x scale

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.