Home / 385,272.72-531,664.56-215,507.52

Finding the Fourth Proportional to 385,272.72, 531,664.56 and 215,507.52

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Solution

The fourth proportional to 385,272.72, 531,664.56 and 215,507.52 is: 297,393.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,272.72 : 531,664.56 = 215,507.52 : x
  2. Step 2: Convert to fraction form
    385,272.72/531,664.56 = 215,507.52/x
  3. Step 3: Cross multiply
    385,272.72x = 531,664.56 × 215,507.52
  4. Step 4: Simplify right side
    385,272.72x = 114,577,710,797.49
  5. Step 5: Solve for x
    x = 114,577,710,797.49/385,272.72
  6. Step 6: Final answer
    x = 297,393.78

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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.