Home / 385,231.50-531,621.54-215,465.58

Finding the Fourth Proportional to 385,231.50, 531,621.54 and 215,465.58

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Solution

The fourth proportional to 385,231.50, 531,621.54 and 215,465.58 is: 297,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,231.50 : 531,621.54 = 215,465.58 : x
  2. Step 2: Convert to fraction form
    385,231.50/531,621.54 = 215,465.58/x
  3. Step 3: Cross multiply
    385,231.50x = 531,621.54 × 215,465.58
  4. Step 4: Simplify right side
    385,231.50x = 114,546,143,456.59
  5. Step 5: Solve for x
    x = 114,546,143,456.59/385,231.50
  6. Step 6: Final answer
    x = 297,343.66

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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.