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Finding the Fourth Proportional to 225,282.80, 310,890.30 and 140,400.20

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Solution

The fourth proportional to 225,282.80, 310,890.30 and 140,400.20 is: 193,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,282.80 : 310,890.30 = 140,400.20 : x
  2. Step 2: Convert to fraction form
    225,282.80/310,890.30 = 140,400.20/x
  3. Step 3: Cross multiply
    225,282.80x = 310,890.30 × 140,400.20
  4. Step 4: Simplify right side
    225,282.80x = 43,649,060,298.06
  5. Step 5: Solve for x
    x = 43,649,060,298.06/225,282.80
  6. Step 6: Final answer
    x = 193,752.30

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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.