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Finding the Fourth Proportional to 243,635.80, 365,324.10 and 103,235.80

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Solution

The fourth proportional to 243,635.80, 365,324.10 and 103,235.80 is: 154,798.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,635.80 : 365,324.10 = 103,235.80 : x
  2. Step 2: Convert to fraction form
    243,635.80/365,324.10 = 103,235.80/x
  3. Step 3: Cross multiply
    243,635.80x = 365,324.10 × 103,235.80
  4. Step 4: Simplify right side
    243,635.80x = 37,714,525,722.78
  5. Step 5: Solve for x
    x = 37,714,525,722.78/243,635.80
  6. Step 6: Final answer
    x = 154,798.78

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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.