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Finding the Fourth Proportional to 225,491.76, 311,142.06 and 134,885.16

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Solution

The fourth proportional to 225,491.76, 311,142.06 and 134,885.16 is: 186,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,491.76 : 311,142.06 = 134,885.16 : x
  2. Step 2: Convert to fraction form
    225,491.76/311,142.06 = 134,885.16/x
  3. Step 3: Cross multiply
    225,491.76x = 311,142.06 × 134,885.16
  4. Step 4: Simplify right side
    225,491.76x = 41,968,446,545.83
  5. Step 5: Solve for x
    x = 41,968,446,545.83/225,491.76
  6. Step 6: Final answer
    x = 186,119.65

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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.