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Finding the Fourth Proportional to 215,873.40, 323,810.10 and 211,726.20

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Solution

The fourth proportional to 215,873.40, 323,810.10 and 211,726.20 is: 317,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,873.40 : 323,810.10 = 211,726.20 : x
  2. Step 2: Convert to fraction form
    215,873.40/323,810.10 = 211,726.20/x
  3. Step 3: Cross multiply
    215,873.40x = 323,810.10 × 211,726.20
  4. Step 4: Simplify right side
    215,873.40x = 68,559,081,994.62
  5. Step 5: Solve for x
    x = 68,559,081,994.62/215,873.40
  6. Step 6: Final answer
    x = 317,589.30

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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.