Home / 385,270.31-531,644.15-215,471.63

Finding the Fourth Proportional to 385,270.31, 531,644.15 and 215,471.63

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Solution

The fourth proportional to 385,270.31, 531,644.15 and 215,471.63 is: 297,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,270.31 : 531,644.15 = 215,471.63 : x
  2. Step 2: Convert to fraction form
    385,270.31/531,644.15 = 215,471.63/x
  3. Step 3: Cross multiply
    385,270.31x = 531,644.15 × 215,471.63
  4. Step 4: Simplify right side
    385,270.31x = 114,554,227,844.89
  5. Step 5: Solve for x
    x = 114,554,227,844.89/385,270.31
  6. Step 6: Final answer
    x = 297,334.69

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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.