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Finding the Fourth Proportional to 280,087.50, 386,843.19 and 203,947.02

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Solution

The fourth proportional to 280,087.50, 386,843.19 and 203,947.02 is: 281,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,087.50 : 386,843.19 = 203,947.02 : x
  2. Step 2: Convert to fraction form
    280,087.50/386,843.19 = 203,947.02/x
  3. Step 3: Cross multiply
    280,087.50x = 386,843.19 × 203,947.02
  4. Step 4: Simplify right side
    280,087.50x = 78,895,515,807.79
  5. Step 5: Solve for x
    x = 78,895,515,807.79/280,087.50
  6. Step 6: Final answer
    x = 281,681.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.