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Finding the Fourth Proportional to 235,442.64, 324,910.41 and 128,012.42

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Solution

The fourth proportional to 235,442.64, 324,910.41 and 128,012.42 is: 176,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,442.64 : 324,910.41 = 128,012.42 : x
  2. Step 2: Convert to fraction form
    235,442.64/324,910.41 = 128,012.42/x
  3. Step 3: Cross multiply
    235,442.64x = 324,910.41 × 128,012.42
  4. Step 4: Simplify right side
    235,442.64x = 41,592,566,242.74
  5. Step 5: Solve for x
    x = 41,592,566,242.74/235,442.64
  6. Step 6: Final answer
    x = 176,656.90

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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.