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Finding the Fourth Proportional to 651,308.20, 976,670.70 and 251,816.20

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Solution

The fourth proportional to 651,308.20, 976,670.70 and 251,816.20 is: 377,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,308.20 : 976,670.70 = 251,816.20 : x
  2. Step 2: Convert to fraction form
    651,308.20/976,670.70 = 251,816.20/x
  3. Step 3: Cross multiply
    651,308.20x = 976,670.70 × 251,816.20
  4. Step 4: Simplify right side
    651,308.20x = 245,941,504,325.34
  5. Step 5: Solve for x
    x = 245,941,504,325.34/651,308.20
  6. Step 6: Final answer
    x = 377,611.56

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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.