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Finding the Fourth Proportional to 292,561.38, 438,803.19 and 115,020.72

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Solution

The fourth proportional to 292,561.38, 438,803.19 and 115,020.72 is: 172,515.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,561.38 : 438,803.19 = 115,020.72 : x
  2. Step 2: Convert to fraction form
    292,561.38/438,803.19 = 115,020.72/x
  3. Step 3: Cross multiply
    292,561.38x = 438,803.19 × 115,020.72
  4. Step 4: Simplify right side
    292,561.38x = 50,471,458,852.10
  5. Step 5: Solve for x
    x = 50,471,458,852.10/292,561.38
  6. Step 6: Final answer
    x = 172,515.79

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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.