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Finding the Fourth Proportional to 280,258.92, 420,554.52 and 262,526.80

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Solution

The fourth proportional to 280,258.92, 420,554.52 and 262,526.80 is: 393,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,258.92 : 420,554.52 = 262,526.80 : x
  2. Step 2: Convert to fraction form
    280,258.92/420,554.52 = 262,526.80/x
  3. Step 3: Cross multiply
    280,258.92x = 420,554.52 × 262,526.80
  4. Step 4: Simplify right side
    280,258.92x = 110,406,832,361.14
  5. Step 5: Solve for x
    x = 110,406,832,361.14/280,258.92
  6. Step 6: Final answer
    x = 393,945.83

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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.