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Finding the Fourth Proportional to 292,563.38, 438,806.19 and 115,022.72

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Solution

The fourth proportional to 292,563.38, 438,806.19 and 115,022.72 is: 172,518.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,563.38 : 438,806.19 = 115,022.72 : x
  2. Step 2: Convert to fraction form
    292,563.38/438,806.19 = 115,022.72/x
  3. Step 3: Cross multiply
    292,563.38x = 438,806.19 × 115,022.72
  4. Step 4: Simplify right side
    292,563.38x = 50,472,681,526.64
  5. Step 5: Solve for x
    x = 50,472,681,526.64/292,563.38
  6. Step 6: Final answer
    x = 172,518.79

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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.