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Finding the Fourth Proportional to 317,907.63, 476,860.23 and 81,249.93

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Solution

The fourth proportional to 317,907.63, 476,860.23 and 81,249.93 is: 121,874.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,907.63 : 476,860.23 = 81,249.93 : x
  2. Step 2: Convert to fraction form
    317,907.63/476,860.23 = 81,249.93/x
  3. Step 3: Cross multiply
    317,907.63x = 476,860.23 × 81,249.93
  4. Step 4: Simplify right side
    317,907.63x = 38,744,860,307.28
  5. Step 5: Solve for x
    x = 38,744,860,307.28/317,907.63
  6. Step 6: Final answer
    x = 121,874.58

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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.