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Finding the Fourth Proportional to 621,808.40, 932,712.60 and 222,462.20

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Solution

The fourth proportional to 621,808.40, 932,712.60 and 222,462.20 is: 333,693.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,808.40 : 932,712.60 = 222,462.20 : x
  2. Step 2: Convert to fraction form
    621,808.40/932,712.60 = 222,462.20/x
  3. Step 3: Cross multiply
    621,808.40x = 932,712.60 × 222,462.20
  4. Step 4: Simplify right side
    621,808.40x = 207,493,296,963.72
  5. Step 5: Solve for x
    x = 207,493,296,963.72/621,808.40
  6. Step 6: Final answer
    x = 333,693.30

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Double scale
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Similar ratio
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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.