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Finding the Fourth Proportional to 225,749.16, 311,534.28 and 125,147.16

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Solution

The fourth proportional to 225,749.16, 311,534.28 and 125,147.16 is: 172,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,749.16 : 311,534.28 = 125,147.16 : x
  2. Step 2: Convert to fraction form
    225,749.16/311,534.28 = 125,147.16/x
  3. Step 3: Cross multiply
    225,749.16x = 311,534.28 × 125,147.16
  4. Step 4: Simplify right side
    225,749.16x = 38,987,630,384.64
  5. Step 5: Solve for x
    x = 38,987,630,384.64/225,749.16
  6. Step 6: Final answer
    x = 172,703.32

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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.