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Finding the Fourth Proportional to 225,685.04, 338,483.64 and 85,454.64

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Solution

The fourth proportional to 225,685.04, 338,483.64 and 85,454.64 is: 128,165.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,685.04 : 338,483.64 = 85,454.64 : x
  2. Step 2: Convert to fraction form
    225,685.04/338,483.64 = 85,454.64/x
  3. Step 3: Cross multiply
    225,685.04x = 338,483.64 × 85,454.64
  4. Step 4: Simplify right side
    225,685.04x = 28,924,997,602.09
  5. Step 5: Solve for x
    x = 28,924,997,602.09/225,685.04
  6. Step 6: Final answer
    x = 128,165.33

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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.