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Finding the Fourth Proportional to 213,768.04, 294,953.94 and 128,883.28

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Solution

The fourth proportional to 213,768.04, 294,953.94 and 128,883.28 is: 177,831.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,768.04 : 294,953.94 = 128,883.28 : x
  2. Step 2: Convert to fraction form
    213,768.04/294,953.94 = 128,883.28/x
  3. Step 3: Cross multiply
    213,768.04x = 294,953.94 × 128,883.28
  4. Step 4: Simplify right side
    213,768.04x = 38,014,631,236.12
  5. Step 5: Solve for x
    x = 38,014,631,236.12/213,768.04
  6. Step 6: Final answer
    x = 177,831.22

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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.