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Finding the Fourth Proportional to 225,614.16, 311,343.75 and 134,918.56

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Solution

The fourth proportional to 225,614.16, 311,343.75 and 134,918.56 is: 186,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,614.16 : 311,343.75 = 134,918.56 : x
  2. Step 2: Convert to fraction form
    225,614.16/311,343.75 = 134,918.56/x
  3. Step 3: Cross multiply
    225,614.16x = 311,343.75 × 134,918.56
  4. Step 4: Simplify right side
    225,614.16x = 42,006,050,804.18
  5. Step 5: Solve for x
    x = 42,006,050,804.18/225,614.16
  6. Step 6: Final answer
    x = 186,185.35

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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.