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Finding the Fourth Proportional to 311,442.56, 429,555.48 and 268,496.36

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Solution

The fourth proportional to 311,442.56, 429,555.48 and 268,496.36 is: 370,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,442.56 : 429,555.48 = 268,496.36 : x
  2. Step 2: Convert to fraction form
    311,442.56/429,555.48 = 268,496.36/x
  3. Step 3: Cross multiply
    311,442.56x = 429,555.48 × 268,496.36
  4. Step 4: Simplify right side
    311,442.56x = 115,334,082,798.05
  5. Step 5: Solve for x
    x = 115,334,082,798.05/311,442.56
  6. Step 6: Final answer
    x = 370,322.16

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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.