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Finding the Fourth Proportional to 370,502.36, 511,318.88 and 225,364.87

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Solution

The fourth proportional to 370,502.36, 511,318.88 and 225,364.87 is: 311,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,502.36 : 511,318.88 = 225,364.87 : x
  2. Step 2: Convert to fraction form
    370,502.36/511,318.88 = 225,364.87/x
  3. Step 3: Cross multiply
    370,502.36x = 511,318.88 × 225,364.87
  4. Step 4: Simplify right side
    370,502.36x = 115,233,312,919.75
  5. Step 5: Solve for x
    x = 115,233,312,919.75/370,502.36
  6. Step 6: Final answer
    x = 311,019.11

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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.