Home / 236,400.19-326,231.55-128,969.46

Finding the Fourth Proportional to 236,400.19, 326,231.55 and 128,969.46

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Solution

The fourth proportional to 236,400.19, 326,231.55 and 128,969.46 is: 177,977.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,400.19 : 326,231.55 = 128,969.46 : x
  2. Step 2: Convert to fraction form
    236,400.19/326,231.55 = 128,969.46/x
  3. Step 3: Cross multiply
    236,400.19x = 326,231.55 × 128,969.46
  4. Step 4: Simplify right side
    236,400.19x = 42,073,906,838.46
  5. Step 5: Solve for x
    x = 42,073,906,838.46/236,400.19
  6. Step 6: Final answer
    x = 177,977.47

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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.