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Finding the Fourth Proportional to 225,006.84, 310,538.01 and 128,245.48

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Solution

The fourth proportional to 225,006.84, 310,538.01 and 128,245.48 is: 176,995.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,006.84 : 310,538.01 = 128,245.48 : x
  2. Step 2: Convert to fraction form
    225,006.84/310,538.01 = 128,245.48/x
  3. Step 3: Cross multiply
    225,006.84x = 310,538.01 × 128,245.48
  4. Step 4: Simplify right side
    225,006.84x = 39,825,095,494.58
  5. Step 5: Solve for x
    x = 39,825,095,494.58/225,006.84
  6. Step 6: Final answer
    x = 176,995.04

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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.