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Finding the Fourth Proportional to 318,111.68, 476,987.38 and 104,821.76

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Solution

The fourth proportional to 318,111.68, 476,987.38 and 104,821.76 is: 157,173.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,111.68 : 476,987.38 = 104,821.76 : x
  2. Step 2: Convert to fraction form
    318,111.68/476,987.38 = 104,821.76/x
  3. Step 3: Cross multiply
    318,111.68x = 476,987.38 × 104,821.76
  4. Step 4: Simplify right side
    318,111.68x = 49,998,657,599.80
  5. Step 5: Solve for x
    x = 49,998,657,599.80/318,111.68
  6. Step 6: Final answer
    x = 157,173.28

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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.