Home / 385,097.32-531,435.54-215,371.72

Finding the Fourth Proportional to 385,097.32, 531,435.54 and 215,371.72

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Solution

The fourth proportional to 385,097.32, 531,435.54 and 215,371.72 is: 297,213.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,097.32 : 531,435.54 = 215,371.72 : x
  2. Step 2: Convert to fraction form
    385,097.32/531,435.54 = 215,371.72/x
  3. Step 3: Cross multiply
    385,097.32x = 531,435.54 × 215,371.72
  4. Step 4: Simplify right side
    385,097.32x = 114,456,186,318.93
  5. Step 5: Solve for x
    x = 114,456,186,318.93/385,097.32
  6. Step 6: Final answer
    x = 297,213.67

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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.