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Finding the Fourth Proportional to 225,034.49, 310,553.01 and 128,236.28

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Solution

The fourth proportional to 225,034.49, 310,553.01 and 128,236.28 is: 176,969.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,034.49 : 310,553.01 = 128,236.28 : x
  2. Step 2: Convert to fraction form
    225,034.49/310,553.01 = 128,236.28/x
  3. Step 3: Cross multiply
    225,034.49x = 310,553.01 × 128,236.28
  4. Step 4: Simplify right side
    225,034.49x = 39,824,160,551.26
  5. Step 5: Solve for x
    x = 39,824,160,551.26/225,034.49
  6. Step 6: Final answer
    x = 176,969.14

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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.