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Finding the Fourth Proportional to 225,293.08, 310,892.10 and 128,482.72

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Solution

The fourth proportional to 225,293.08, 310,892.10 and 128,482.72 is: 177,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,293.08 : 310,892.10 = 128,482.72 : x
  2. Step 2: Convert to fraction form
    225,293.08/310,892.10 = 128,482.72/x
  3. Step 3: Cross multiply
    225,293.08x = 310,892.10 × 128,482.72
  4. Step 4: Simplify right side
    225,293.08x = 39,944,262,634.51
  5. Step 5: Solve for x
    x = 39,944,262,634.51/225,293.08
  6. Step 6: Final answer
    x = 177,299.11

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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.