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Finding the Fourth Proportional to 330,953.58, 496,366.87 and 128,549.46

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Solution

The fourth proportional to 330,953.58, 496,366.87 and 128,549.46 is: 192,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,953.58 : 496,366.87 = 128,549.46 : x
  2. Step 2: Convert to fraction form
    330,953.58/496,366.87 = 128,549.46/x
  3. Step 3: Cross multiply
    330,953.58x = 496,366.87 × 128,549.46
  4. Step 4: Simplify right side
    330,953.58x = 63,807,693,100.39
  5. Step 5: Solve for x
    x = 63,807,693,100.39/330,953.58
  6. Step 6: Final answer
    x = 192,799.53

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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.