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Finding the Fourth Proportional to 280,349.44, 420,524.16 and 69,987.04

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Solution

The fourth proportional to 280,349.44, 420,524.16 and 69,987.04 is: 104,980.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,349.44 : 420,524.16 = 69,987.04 : x
  2. Step 2: Convert to fraction form
    280,349.44/420,524.16 = 69,987.04/x
  3. Step 3: Cross multiply
    280,349.44x = 420,524.16 × 69,987.04
  4. Step 4: Simplify right side
    280,349.44x = 29,431,241,206.89
  5. Step 5: Solve for x
    x = 29,431,241,206.89/280,349.44
  6. Step 6: Final answer
    x = 104,980.56

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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.