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Finding the Fourth Proportional to 235,483.72, 324,969.06 and 128,054.92

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Solution

The fourth proportional to 235,483.72, 324,969.06 and 128,054.92 is: 176,716.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,483.72 : 324,969.06 = 128,054.92 : x
  2. Step 2: Convert to fraction form
    235,483.72/324,969.06 = 128,054.92/x
  3. Step 3: Cross multiply
    235,483.72x = 324,969.06 × 128,054.92
  4. Step 4: Simplify right side
    235,483.72x = 41,613,886,980.78
  5. Step 5: Solve for x
    x = 41,613,886,980.78/235,483.72
  6. Step 6: Final answer
    x = 176,716.62

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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.