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Finding the Fourth Proportional to 235,866.72, 325,502.28 and 128,441.28

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Solution

The fourth proportional to 235,866.72, 325,502.28 and 128,441.28 is: 177,252.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,866.72 : 325,502.28 = 128,441.28 : x
  2. Step 2: Convert to fraction form
    235,866.72/325,502.28 = 128,441.28/x
  3. Step 3: Cross multiply
    235,866.72x = 325,502.28 × 128,441.28
  4. Step 4: Simplify right side
    235,866.72x = 41,807,929,486.12
  5. Step 5: Solve for x
    x = 41,807,929,486.12/235,866.72
  6. Step 6: Final answer
    x = 177,252.35

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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.