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Finding the Fourth Proportional to 262,331.60, 393,893.40 and 209,584.40

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Solution

The fourth proportional to 262,331.60, 393,893.40 and 209,584.40 is: 314,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,331.60 : 393,893.40 = 209,584.40 : x
  2. Step 2: Convert to fraction form
    262,331.60/393,893.40 = 209,584.40/x
  3. Step 3: Cross multiply
    262,331.60x = 393,893.40 × 209,584.40
  4. Step 4: Simplify right side
    262,331.60x = 82,553,911,902.96
  5. Step 5: Solve for x
    x = 82,553,911,902.96/262,331.60
  6. Step 6: Final answer
    x = 314,692.98

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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.