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Finding the Fourth Proportional to 445,059.74, 667,694.63 and 145,539.16

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Solution

The fourth proportional to 445,059.74, 667,694.63 and 145,539.16 is: 218,343.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,059.74 : 667,694.63 = 145,539.16 : x
  2. Step 2: Convert to fraction form
    445,059.74/667,694.63 = 145,539.16/x
  3. Step 3: Cross multiply
    445,059.74x = 667,694.63 × 145,539.16
  4. Step 4: Simplify right side
    445,059.74x = 97,175,714,281.32
  5. Step 5: Solve for x
    x = 97,175,714,281.32/445,059.74
  6. Step 6: Final answer
    x = 218,343.08

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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.