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Finding the Fourth Proportional to 292,458.10, 438,687.15 and 105,469.60

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Solution

The fourth proportional to 292,458.10, 438,687.15 and 105,469.60 is: 158,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,458.10 : 438,687.15 = 105,469.60 : x
  2. Step 2: Convert to fraction form
    292,458.10/438,687.15 = 105,469.60/x
  3. Step 3: Cross multiply
    292,458.10x = 438,687.15 × 105,469.60
  4. Step 4: Simplify right side
    292,458.10x = 46,268,157,138.92
  5. Step 5: Solve for x
    x = 46,268,157,138.92/292,458.10
  6. Step 6: Final answer
    x = 158,204.40

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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.