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Finding the Fourth Proportional to 331,323.90, 496,985.85 and 289,851.90

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Solution

The fourth proportional to 331,323.90, 496,985.85 and 289,851.90 is: 434,777.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,323.90 : 496,985.85 = 289,851.90 : x
  2. Step 2: Convert to fraction form
    331,323.90/496,985.85 = 289,851.90/x
  3. Step 3: Cross multiply
    331,323.90x = 496,985.85 × 289,851.90
  4. Step 4: Simplify right side
    331,323.90x = 144,052,292,895.62
  5. Step 5: Solve for x
    x = 144,052,292,895.62/331,323.90
  6. Step 6: Final answer
    x = 434,777.85

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Similar ratio
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1.5x scale

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.