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Finding the Fourth Proportional to 235,895.80, 325,538.30 and 128,466.32

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Solution

The fourth proportional to 235,895.80, 325,538.30 and 128,466.32 is: 177,284.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,895.80 : 325,538.30 = 128,466.32 : x
  2. Step 2: Convert to fraction form
    235,895.80/325,538.30 = 128,466.32/x
  3. Step 3: Cross multiply
    235,895.80x = 325,538.30 × 128,466.32
  4. Step 4: Simplify right side
    235,895.80x = 41,820,707,420.06
  5. Step 5: Solve for x
    x = 41,820,707,420.06/235,895.80
  6. Step 6: Final answer
    x = 177,284.66

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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.