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Finding the Fourth Proportional to 292,299.36, 438,464.16 and 92,640.96

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Solution

The fourth proportional to 292,299.36, 438,464.16 and 92,640.96 is: 138,966.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,299.36 : 438,464.16 = 92,640.96 : x
  2. Step 2: Convert to fraction form
    292,299.36/438,464.16 = 92,640.96/x
  3. Step 3: Cross multiply
    292,299.36x = 438,464.16 × 92,640.96
  4. Step 4: Simplify right side
    292,299.36x = 40,619,740,707.99
  5. Step 5: Solve for x
    x = 40,619,740,707.99/292,299.36
  6. Step 6: Final answer
    x = 138,966.23

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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.