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Finding the Fourth Proportional to 550,157.80, 759,217.14 and 308,440.42

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Solution

The fourth proportional to 550,157.80, 759,217.14 and 308,440.42 is: 425,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,157.80 : 759,217.14 = 308,440.42 : x
  2. Step 2: Convert to fraction form
    550,157.80/759,217.14 = 308,440.42/x
  3. Step 3: Cross multiply
    550,157.80x = 759,217.14 × 308,440.42
  4. Step 4: Simplify right side
    550,157.80x = 234,173,253,532.80
  5. Step 5: Solve for x
    x = 234,173,253,532.80/550,157.80
  6. Step 6: Final answer
    x = 425,647.43

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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.