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Finding the Fourth Proportional to 225,011.66, 310,575.67 and 140,078.30

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Solution

The fourth proportional to 225,011.66, 310,575.67 and 140,078.30 is: 193,345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,011.66 : 310,575.67 = 140,078.30 : x
  2. Step 2: Convert to fraction form
    225,011.66/310,575.67 = 140,078.30/x
  3. Step 3: Cross multiply
    225,011.66x = 310,575.67 × 140,078.30
  4. Step 4: Simplify right side
    225,011.66x = 43,504,909,971.89
  5. Step 5: Solve for x
    x = 43,504,909,971.89/225,011.66
  6. Step 6: Final answer
    x = 193,345.14

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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.