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Finding the Fourth Proportional to 330,281.70, 495,422.55 and 285,994.95

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Solution

The fourth proportional to 330,281.70, 495,422.55 and 285,994.95 is: 428,992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,281.70 : 495,422.55 = 285,994.95 : x
  2. Step 2: Convert to fraction form
    330,281.70/495,422.55 = 285,994.95/x
  3. Step 3: Cross multiply
    330,281.70x = 495,422.55 × 285,994.95
  4. Step 4: Simplify right side
    330,281.70x = 141,688,347,416.12
  5. Step 5: Solve for x
    x = 141,688,347,416.12/330,281.70
  6. Step 6: Final answer
    x = 428,992.43

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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.