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Finding the Fourth Proportional to 262,215.80, 393,420.90 and 252,495.80

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Solution

The fourth proportional to 262,215.80, 393,420.90 and 252,495.80 is: 378,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,215.80 : 393,420.90 = 252,495.80 : x
  2. Step 2: Convert to fraction form
    262,215.80/393,420.90 = 252,495.80/x
  3. Step 3: Cross multiply
    262,215.80x = 393,420.90 × 252,495.80
  4. Step 4: Simplify right side
    262,215.80x = 99,337,124,882.22
  5. Step 5: Solve for x
    x = 99,337,124,882.22/262,215.80
  6. Step 6: Final answer
    x = 378,837.30

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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.