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Finding the Fourth Proportional to 235,810.41, 325,424.22 and 128,386.34

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Solution

The fourth proportional to 235,810.41, 325,424.22 and 128,386.34 is: 177,176.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,810.41 : 325,424.22 = 128,386.34 : x
  2. Step 2: Convert to fraction form
    235,810.41/325,424.22 = 128,386.34/x
  3. Step 3: Cross multiply
    235,810.41x = 325,424.22 × 128,386.34
  4. Step 4: Simplify right side
    235,810.41x = 41,780,022,926.03
  5. Step 5: Solve for x
    x = 41,780,022,926.03/235,810.41
  6. Step 6: Final answer
    x = 177,176.33

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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.