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Finding the Fourth Proportional to 225,378.72, 311,023.44 and 124,776.72

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Solution

The fourth proportional to 225,378.72, 311,023.44 and 124,776.72 is: 172,192.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,378.72 : 311,023.44 = 124,776.72 : x
  2. Step 2: Convert to fraction form
    225,378.72/311,023.44 = 124,776.72/x
  3. Step 3: Cross multiply
    225,378.72x = 311,023.44 × 124,776.72
  4. Step 4: Simplify right side
    225,378.72x = 38,808,484,686.32
  5. Step 5: Solve for x
    x = 38,808,484,686.32/225,378.72
  6. Step 6: Final answer
    x = 172,192.32

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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.