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Finding the Fourth Proportional to 508,450.38, 701,990.21 and 315,063.30

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Solution

The fourth proportional to 508,450.38, 701,990.21 and 315,063.30 is: 434,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,450.38 : 701,990.21 = 315,063.30 : x
  2. Step 2: Convert to fraction form
    508,450.38/701,990.21 = 315,063.30/x
  3. Step 3: Cross multiply
    508,450.38x = 701,990.21 × 315,063.30
  4. Step 4: Simplify right side
    508,450.38x = 221,171,352,130.29
  5. Step 5: Solve for x
    x = 221,171,352,130.29/508,450.38
  6. Step 6: Final answer
    x = 434,991.03

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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.