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Finding the Fourth Proportional to 422,988, 583,775.28 and 244,140

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Solution

The fourth proportional to 422,988, 583,775.28 and 244,140 is: 336,943.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,988 : 583,775.28 = 244,140 : x
  2. Step 2: Convert to fraction form
    422,988/583,775.28 = 244,140/x
  3. Step 3: Cross multiply
    422,988x = 583,775.28 × 244,140
  4. Step 4: Simplify right side
    422,988x = 142,522,896,859.20
  5. Step 5: Solve for x
    x = 142,522,896,859.20/422,988
  6. Step 6: Final answer
    x = 336,943.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.