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Finding the Fourth Proportional to 448,551.52, 672,827.28 and 211,918

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Solution

The fourth proportional to 448,551.52, 672,827.28 and 211,918 is: 317,877

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,551.52 : 672,827.28 = 211,918 : x
  2. Step 2: Convert to fraction form
    448,551.52/672,827.28 = 211,918/x
  3. Step 3: Cross multiply
    448,551.52x = 672,827.28 × 211,918
  4. Step 4: Simplify right side
    448,551.52x = 142,584,211,523.04
  5. Step 5: Solve for x
    x = 142,584,211,523.04/448,551.52
  6. Step 6: Final answer
    x = 317,877

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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.