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Finding the Fourth Proportional to 621,619.20, 932,428.80 and 201,196.80

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Solution

The fourth proportional to 621,619.20, 932,428.80 and 201,196.80 is: 301,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,619.20 : 932,428.80 = 201,196.80 : x
  2. Step 2: Convert to fraction form
    621,619.20/932,428.80 = 201,196.80/x
  3. Step 3: Cross multiply
    621,619.20x = 932,428.80 × 201,196.80
  4. Step 4: Simplify right side
    621,619.20x = 187,601,690,787.84
  5. Step 5: Solve for x
    x = 187,601,690,787.84/621,619.20
  6. Step 6: Final answer
    x = 301,795.20

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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.