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Finding the Fourth Proportional to 211,458, 317,187 and 63,714

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Solution

The fourth proportional to 211,458, 317,187 and 63,714 is: 95,571

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,458 : 317,187 = 63,714 : x
  2. Step 2: Convert to fraction form
    211,458/317,187 = 63,714/x
  3. Step 3: Cross multiply
    211,458x = 317,187 × 63,714
  4. Step 4: Simplify right side
    211,458x = 20,209,252,518
  5. Step 5: Solve for x
    x = 20,209,252,518/211,458
  6. Step 6: Final answer
    x = 95,571

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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.