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Finding the Fourth Proportional to 397,310.10, 595,965.15 and 210,686.10

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Solution

The fourth proportional to 397,310.10, 595,965.15 and 210,686.10 is: 316,029.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,310.10 : 595,965.15 = 210,686.10 : x
  2. Step 2: Convert to fraction form
    397,310.10/595,965.15 = 210,686.10/x
  3. Step 3: Cross multiply
    397,310.10x = 595,965.15 × 210,686.10
  4. Step 4: Simplify right side
    397,310.10x = 125,561,573,189.42
  5. Step 5: Solve for x
    x = 125,561,573,189.42/397,310.10
  6. Step 6: Final answer
    x = 316,029.15

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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.