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Finding the Fourth Proportional to 225,299.58, 310,901.07 and 128,489.22

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Solution

The fourth proportional to 225,299.58, 310,901.07 and 128,489.22 is: 177,308.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,299.58 : 310,901.07 = 128,489.22 : x
  2. Step 2: Convert to fraction form
    225,299.58/310,901.07 = 128,489.22/x
  3. Step 3: Cross multiply
    225,299.58x = 310,901.07 × 128,489.22
  4. Step 4: Simplify right side
    225,299.58x = 39,947,435,981.47
  5. Step 5: Solve for x
    x = 39,947,435,981.47/225,299.58
  6. Step 6: Final answer
    x = 177,308.08

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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.