Home / 280,528.72-420,796.80-93,540.28

Finding the Fourth Proportional to 280,528.72, 420,796.80 and 93,540.28

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Solution

The fourth proportional to 280,528.72, 420,796.80 and 93,540.28 is: 140,311.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,528.72 : 420,796.80 = 93,540.28 : x
  2. Step 2: Convert to fraction form
    280,528.72/420,796.80 = 93,540.28/x
  3. Step 3: Cross multiply
    280,528.72x = 420,796.80 × 93,540.28
  4. Step 4: Simplify right side
    280,528.72x = 39,361,450,495.10
  5. Step 5: Solve for x
    x = 39,361,450,495.10/280,528.72
  6. Step 6: Final answer
    x = 140,311.66

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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.