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Finding the Fourth Proportional to 280,453.84, 420,612.72 and 93,441.04

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Solution

The fourth proportional to 280,453.84, 420,612.72 and 93,441.04 is: 140,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,453.84 : 420,612.72 = 93,441.04 : x
  2. Step 2: Convert to fraction form
    280,453.84/420,612.72 = 93,441.04/x
  3. Step 3: Cross multiply
    280,453.84x = 420,612.72 × 93,441.04
  4. Step 4: Simplify right side
    280,453.84x = 39,302,489,994.03
  5. Step 5: Solve for x
    x = 39,302,489,994.03/280,453.84
  6. Step 6: Final answer
    x = 140,138.89

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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.