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Finding the Fourth Proportional to 235,776.49, 325,371.59 and 128,347.32

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Solution

The fourth proportional to 235,776.49, 325,371.59 and 128,347.32 is: 177,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,776.49 : 325,371.59 = 128,347.32 : x
  2. Step 2: Convert to fraction form
    235,776.49/325,371.59 = 128,347.32/x
  3. Step 3: Cross multiply
    235,776.49x = 325,371.59 × 128,347.32
  4. Step 4: Simplify right side
    235,776.49x = 41,760,572,640.35
  5. Step 5: Solve for x
    x = 41,760,572,640.35/235,776.49
  6. Step 6: Final answer
    x = 177,119.33

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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.