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Finding the Fourth Proportional to 225,138.92, 310,518.58 and 157,134.20

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Solution

The fourth proportional to 225,138.92, 310,518.58 and 157,134.20 is: 216,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,138.92 : 310,518.58 = 157,134.20 : x
  2. Step 2: Convert to fraction form
    225,138.92/310,518.58 = 157,134.20/x
  3. Step 3: Cross multiply
    225,138.92x = 310,518.58 × 157,134.20
  4. Step 4: Simplify right side
    225,138.92x = 48,793,088,653.44
  5. Step 5: Solve for x
    x = 48,793,088,653.44/225,138.92
  6. Step 6: Final answer
    x = 216,724.36

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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.