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Finding the Fourth Proportional to 211,632, 317,448 and 63,888

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Solution

The fourth proportional to 211,632, 317,448 and 63,888 is: 95,832

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,632 : 317,448 = 63,888 : x
  2. Step 2: Convert to fraction form
    211,632/317,448 = 63,888/x
  3. Step 3: Cross multiply
    211,632x = 317,448 × 63,888
  4. Step 4: Simplify right side
    211,632x = 20,281,117,824
  5. Step 5: Solve for x
    x = 20,281,117,824/211,632
  6. Step 6: Final answer
    x = 95,832

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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.