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Finding the Fourth Proportional to 455,860.68, 629,111.95 and 262,297.80

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Solution

The fourth proportional to 455,860.68, 629,111.95 and 262,297.80 is: 361,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,860.68 : 629,111.95 = 262,297.80 : x
  2. Step 2: Convert to fraction form
    455,860.68/629,111.95 = 262,297.80/x
  3. Step 3: Cross multiply
    455,860.68x = 629,111.95 × 262,297.80
  4. Step 4: Simplify right side
    455,860.68x = 165,014,680,438.71
  5. Step 5: Solve for x
    x = 165,014,680,438.71/455,860.68
  6. Step 6: Final answer
    x = 361,984.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.