Home / 385,102.52-531,453.58-215,336.20

Finding the Fourth Proportional to 385,102.52, 531,453.58 and 215,336.20

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Solution

The fourth proportional to 385,102.52, 531,453.58 and 215,336.20 is: 297,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,102.52 : 531,453.58 = 215,336.20 : x
  2. Step 2: Convert to fraction form
    385,102.52/531,453.58 = 215,336.20/x
  3. Step 3: Cross multiply
    385,102.52x = 531,453.58 × 215,336.20
  4. Step 4: Simplify right side
    385,102.52x = 114,441,194,393.60
  5. Step 5: Solve for x
    x = 114,441,194,393.60/385,102.52
  6. Step 6: Final answer
    x = 297,170.72

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1.5x scale

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.