Home / 292,305.78-438,471-92,621.75

Finding the Fourth Proportional to 292,305.78, 438,471 and 92,621.75

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Solution

The fourth proportional to 292,305.78, 438,471 and 92,621.75 is: 138,936.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,305.78 : 438,471 = 92,621.75 : x
  2. Step 2: Convert to fraction form
    292,305.78/438,471 = 92,621.75/x
  3. Step 3: Cross multiply
    292,305.78x = 438,471 × 92,621.75
  4. Step 4: Simplify right side
    292,305.78x = 40,611,949,151.90
  5. Step 5: Solve for x
    x = 40,611,949,151.90/292,305.78
  6. Step 6: Final answer
    x = 138,936.52

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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.