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Finding the Fourth Proportional to 647,906.70, 971,860.05 and 227,225.10

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Solution

The fourth proportional to 647,906.70, 971,860.05 and 227,225.10 is: 340,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,906.70 : 971,860.05 = 227,225.10 : x
  2. Step 2: Convert to fraction form
    647,906.70/971,860.05 = 227,225.10/x
  3. Step 3: Cross multiply
    647,906.70x = 971,860.05 × 227,225.10
  4. Step 4: Simplify right side
    647,906.70x = 220,830,997,047.26
  5. Step 5: Solve for x
    x = 220,830,997,047.26/647,906.70
  6. Step 6: Final answer
    x = 340,837.65

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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.