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Finding the Fourth Proportional to 330,752.30, 496,128.45 and 279,430.70

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Solution

The fourth proportional to 330,752.30, 496,128.45 and 279,430.70 is: 419,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,752.30 : 496,128.45 = 279,430.70 : x
  2. Step 2: Convert to fraction form
    330,752.30/496,128.45 = 279,430.70/x
  3. Step 3: Cross multiply
    330,752.30x = 496,128.45 × 279,430.70
  4. Step 4: Simplify right side
    330,752.30x = 138,633,520,073.42
  5. Step 5: Solve for x
    x = 138,633,520,073.42/330,752.30
  6. Step 6: Final answer
    x = 419,146.05

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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.