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Finding the Fourth Proportional to 662,727.20, 994,256.40 and 213,490.40

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Solution

The fourth proportional to 662,727.20, 994,256.40 and 213,490.40 is: 320,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,727.20 : 994,256.40 = 213,490.40 : x
  2. Step 2: Convert to fraction form
    662,727.20/994,256.40 = 213,490.40/x
  3. Step 3: Cross multiply
    662,727.20x = 994,256.40 × 213,490.40
  4. Step 4: Simplify right side
    662,727.20x = 212,264,196,538.56
  5. Step 5: Solve for x
    x = 212,264,196,538.56/662,727.20
  6. Step 6: Final answer
    x = 320,288.95

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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.