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Finding the Fourth Proportional to 331,332.90, 496,999.35 and 278,844.90

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Solution

The fourth proportional to 331,332.90, 496,999.35 and 278,844.90 is: 418,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,332.90 : 496,999.35 = 278,844.90 : x
  2. Step 2: Convert to fraction form
    331,332.90/496,999.35 = 278,844.90/x
  3. Step 3: Cross multiply
    331,332.90x = 496,999.35 × 278,844.90
  4. Step 4: Simplify right side
    331,332.90x = 138,585,734,050.82
  5. Step 5: Solve for x
    x = 138,585,734,050.82/331,332.90
  6. Step 6: Final answer
    x = 418,267.35

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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.