Home / 280,084.30-420,313.25-145,272.62

Finding the Fourth Proportional to 280,084.30, 420,313.25 and 145,272.62

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Solution

The fourth proportional to 280,084.30, 420,313.25 and 145,272.62 is: 218,005.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,084.30 : 420,313.25 = 145,272.62 : x
  2. Step 2: Convert to fraction form
    280,084.30/420,313.25 = 145,272.62/x
  3. Step 3: Cross multiply
    280,084.30x = 420,313.25 × 145,272.62
  4. Step 4: Simplify right side
    280,084.30x = 61,060,008,462.18
  5. Step 5: Solve for x
    x = 61,060,008,462.18/280,084.30
  6. Step 6: Final answer
    x = 218,005.83

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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.