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Finding the Fourth Proportional to 331,326.40, 496,989.60 and 289,854.40

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Solution

The fourth proportional to 331,326.40, 496,989.60 and 289,854.40 is: 434,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,326.40 : 496,989.60 = 289,854.40 : x
  2. Step 2: Convert to fraction form
    331,326.40/496,989.60 = 289,854.40/x
  3. Step 3: Cross multiply
    331,326.40x = 496,989.60 × 289,854.40
  4. Step 4: Simplify right side
    331,326.40x = 144,054,622,314.24
  5. Step 5: Solve for x
    x = 144,054,622,314.24/331,326.40
  6. Step 6: Final answer
    x = 434,781.60

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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.