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Finding the Fourth Proportional to 485,445.60, 728,492.34 and 169,902.54

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Solution

The fourth proportional to 485,445.60, 728,492.34 and 169,902.54 is: 254,967.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,445.60 : 728,492.34 = 169,902.54 : x
  2. Step 2: Convert to fraction form
    485,445.60/728,492.34 = 169,902.54/x
  3. Step 3: Cross multiply
    485,445.60x = 728,492.34 × 169,902.54
  4. Step 4: Simplify right side
    485,445.60x = 123,772,698,936.54
  5. Step 5: Solve for x
    x = 123,772,698,936.54/485,445.60
  6. Step 6: Final answer
    x = 254,967.19

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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.