Home / 385,016.34-531,345.78-215,251.68

Finding the Fourth Proportional to 385,016.34, 531,345.78 and 215,251.68

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Solution

The fourth proportional to 385,016.34, 531,345.78 and 215,251.68 is: 297,060.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,016.34 : 531,345.78 = 215,251.68 : x
  2. Step 2: Convert to fraction form
    385,016.34/531,345.78 = 215,251.68/x
  3. Step 3: Cross multiply
    385,016.34x = 531,345.78 × 215,251.68
  4. Step 4: Simplify right side
    385,016.34x = 114,373,071,805.91
  5. Step 5: Solve for x
    x = 114,373,071,805.91/385,016.34
  6. Step 6: Final answer
    x = 297,060.31

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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.