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Finding the Fourth Proportional to 485,343.85, 728,052.63 and 165,396.28

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Solution

The fourth proportional to 485,343.85, 728,052.63 and 165,396.28 is: 248,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,343.85 : 728,052.63 = 165,396.28 : x
  2. Step 2: Convert to fraction form
    485,343.85/728,052.63 = 165,396.28/x
  3. Step 3: Cross multiply
    485,343.85x = 728,052.63 × 165,396.28
  4. Step 4: Simplify right side
    485,343.85x = 120,417,196,646.22
  5. Step 5: Solve for x
    x = 120,417,196,646.22/485,343.85
  6. Step 6: Final answer
    x = 248,106.98

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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.