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Finding the Fourth Proportional to 330,984.90, 496,482.21 and 81,666.90

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Solution

The fourth proportional to 330,984.90, 496,482.21 and 81,666.90 is: 122,501.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,984.90 : 496,482.21 = 81,666.90 : x
  2. Step 2: Convert to fraction form
    330,984.90/496,482.21 = 81,666.90/x
  3. Step 3: Cross multiply
    330,984.90x = 496,482.21 × 81,666.90
  4. Step 4: Simplify right side
    330,984.90x = 40,546,162,995.85
  5. Step 5: Solve for x
    x = 40,546,162,995.85/330,984.90
  6. Step 6: Final answer
    x = 122,501.55

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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.