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Finding the Fourth Proportional to 631,957.30, 948,065.55 and 211,534.90

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Solution

The fourth proportional to 631,957.30, 948,065.55 and 211,534.90 is: 317,345.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,957.30 : 948,065.55 = 211,534.90 : x
  2. Step 2: Convert to fraction form
    631,957.30/948,065.55 = 211,534.90/x
  3. Step 3: Cross multiply
    631,957.30x = 948,065.55 × 211,534.90
  4. Step 4: Simplify right side
    631,957.30x = 200,548,951,312.70
  5. Step 5: Solve for x
    x = 200,548,951,312.70/631,957.30
  6. Step 6: Final answer
    x = 317,345.73

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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.