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Finding the Fourth Proportional to 235,449.58, 324,924.50 and 128,020.34

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Solution

The fourth proportional to 235,449.58, 324,924.50 and 128,020.34 is: 176,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,449.58 : 324,924.50 = 128,020.34 : x
  2. Step 2: Convert to fraction form
    235,449.58/324,924.50 = 128,020.34/x
  3. Step 3: Cross multiply
    235,449.58x = 324,924.50 × 128,020.34
  4. Step 4: Simplify right side
    235,449.58x = 41,596,944,324.23
  5. Step 5: Solve for x
    x = 41,596,944,324.23/235,449.58
  6. Step 6: Final answer
    x = 176,670.28

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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.