Home / 280,244.58-420,355.11-130,433.34

Finding the Fourth Proportional to 280,244.58, 420,355.11 and 130,433.34

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Solution

The fourth proportional to 280,244.58, 420,355.11 and 130,433.34 is: 195,644.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,244.58 : 420,355.11 = 130,433.34 : x
  2. Step 2: Convert to fraction form
    280,244.58/420,355.11 = 130,433.34/x
  3. Step 3: Cross multiply
    280,244.58x = 420,355.11 × 130,433.34
  4. Step 4: Simplify right side
    280,244.58x = 54,828,320,983.37
  5. Step 5: Solve for x
    x = 54,828,320,983.37/280,244.58
  6. Step 6: Final answer
    x = 195,644.54

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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.