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Finding the Fourth Proportional to 507,401.62, 700,157.73 and 280,990.42

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Solution

The fourth proportional to 507,401.62, 700,157.73 and 280,990.42 is: 387,735.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,401.62 : 700,157.73 = 280,990.42 : x
  2. Step 2: Convert to fraction form
    507,401.62/700,157.73 = 280,990.42/x
  3. Step 3: Cross multiply
    507,401.62x = 700,157.73 × 280,990.42
  4. Step 4: Simplify right side
    507,401.62x = 196,737,614,618.95
  5. Step 5: Solve for x
    x = 196,737,614,618.95/507,401.62
  6. Step 6: Final answer
    x = 387,735.49

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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.