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Finding the Fourth Proportional to 507,805.22, 700,771.20 and 281,450.72

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Solution

The fourth proportional to 507,805.22, 700,771.20 and 281,450.72 is: 388,401.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,805.22 : 700,771.20 = 281,450.72 : x
  2. Step 2: Convert to fraction form
    507,805.22/700,771.20 = 281,450.72/x
  3. Step 3: Cross multiply
    507,805.22x = 700,771.20 × 281,450.72
  4. Step 4: Simplify right side
    507,805.22x = 197,232,555,291.41
  5. Step 5: Solve for x
    x = 197,232,555,291.41/507,805.22
  6. Step 6: Final answer
    x = 388,401.99

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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.