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Finding the Fourth Proportional to 662,505.21, 993,548.61 and 213,125.94

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Solution

The fourth proportional to 662,505.21, 993,548.61 and 213,125.94 is: 319,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,505.21 : 993,548.61 = 213,125.94 : x
  2. Step 2: Convert to fraction form
    662,505.21/993,548.61 = 213,125.94/x
  3. Step 3: Cross multiply
    662,505.21x = 993,548.61 × 213,125.94
  4. Step 4: Simplify right side
    662,505.21x = 211,750,981,441.94
  5. Step 5: Solve for x
    x = 211,750,981,441.94/662,505.21
  6. Step 6: Final answer
    x = 319,621.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.