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Finding the Fourth Proportional to 455,315.15, 628,417.15 and 271,565.50

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Solution

The fourth proportional to 455,315.15, 628,417.15 and 271,565.50 is: 374,809.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,315.15 : 628,417.15 = 271,565.50 : x
  2. Step 2: Convert to fraction form
    455,315.15/628,417.15 = 271,565.50/x
  3. Step 3: Cross multiply
    455,315.15x = 628,417.15 × 271,565.50
  4. Step 4: Simplify right side
    455,315.15x = 170,656,414,406.24
  5. Step 5: Solve for x
    x = 170,656,414,406.24/455,315.15
  6. Step 6: Final answer
    x = 374,809.44

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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.