Home / 292,540.80-438,938.64-115,176.72

Finding the Fourth Proportional to 292,540.80, 438,938.64 and 115,176.72

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Solution

The fourth proportional to 292,540.80, 438,938.64 and 115,176.72 is: 172,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,540.80 : 438,938.64 = 115,176.72 : x
  2. Step 2: Convert to fraction form
    292,540.80/438,938.64 = 115,176.72/x
  3. Step 3: Cross multiply
    292,540.80x = 438,938.64 × 115,176.72
  4. Step 4: Simplify right side
    292,540.80x = 50,555,512,836.46
  5. Step 5: Solve for x
    x = 50,555,512,836.46/292,540.80
  6. Step 6: Final answer
    x = 172,815.25

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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.