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Finding the Fourth Proportional to 292,641.34, 438,760.32 and 115,168.72

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Solution

The fourth proportional to 292,641.34, 438,760.32 and 115,168.72 is: 172,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,641.34 : 438,760.32 = 115,168.72 : x
  2. Step 2: Convert to fraction form
    292,641.34/438,760.32 = 115,168.72/x
  3. Step 3: Cross multiply
    292,641.34x = 438,760.32 × 115,168.72
  4. Step 4: Simplify right side
    292,641.34x = 50,531,464,441.19
  5. Step 5: Solve for x
    x = 50,531,464,441.19/292,641.34
  6. Step 6: Final answer
    x = 172,673.71

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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.