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Finding the Fourth Proportional to 235,382.80, 324,796.20 and 139,854.64

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Solution

The fourth proportional to 235,382.80, 324,796.20 and 139,854.64 is: 192,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,382.80 : 324,796.20 = 139,854.64 : x
  2. Step 2: Convert to fraction form
    235,382.80/324,796.20 = 139,854.64/x
  3. Step 3: Cross multiply
    235,382.80x = 324,796.20 × 139,854.64
  4. Step 4: Simplify right side
    235,382.80x = 45,424,255,624.37
  5. Step 5: Solve for x
    x = 45,424,255,624.37/235,382.80
  6. Step 6: Final answer
    x = 192,980.35

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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.