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Finding the Fourth Proportional to 235,671.69, 325,227 and 128,242.14

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Solution

The fourth proportional to 235,671.69, 325,227 and 128,242.14 is: 176,974.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,671.69 : 325,227 = 128,242.14 : x
  2. Step 2: Convert to fraction form
    235,671.69/325,227 = 128,242.14/x
  3. Step 3: Cross multiply
    235,671.69x = 325,227 × 128,242.14
  4. Step 4: Simplify right side
    235,671.69x = 41,707,806,465.78
  5. Step 5: Solve for x
    x = 41,707,806,465.78/235,671.69
  6. Step 6: Final answer
    x = 176,974.19

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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.