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Finding the Fourth Proportional to 235,923.80, 325,578.54 and 128,493.77

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Solution

The fourth proportional to 235,923.80, 325,578.54 and 128,493.77 is: 177,323.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,923.80 : 325,578.54 = 128,493.77 : x
  2. Step 2: Convert to fraction form
    235,923.80/325,578.54 = 128,493.77/x
  3. Step 3: Cross multiply
    235,923.80x = 325,578.54 × 128,493.77
  4. Step 4: Simplify right side
    235,923.80x = 41,834,812,407.80
  5. Step 5: Solve for x
    x = 41,834,812,407.80/235,923.80
  6. Step 6: Final answer
    x = 177,323.41

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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.