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Finding the Fourth Proportional to 330,766.66, 456,501.59 and 321,759.87

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Solution

The fourth proportional to 330,766.66, 456,501.59 and 321,759.87 is: 444,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,766.66 : 456,501.59 = 321,759.87 : x
  2. Step 2: Convert to fraction form
    330,766.66/456,501.59 = 321,759.87/x
  3. Step 3: Cross multiply
    330,766.66x = 456,501.59 × 321,759.87
  4. Step 4: Simplify right side
    330,766.66x = 146,883,892,253.19
  5. Step 5: Solve for x
    x = 146,883,892,253.19/330,766.66
  6. Step 6: Final answer
    x = 444,071.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.