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Finding the Fourth Proportional to 492,368.17, 679,448.31 and 277,552.72

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Solution

The fourth proportional to 492,368.17, 679,448.31 and 277,552.72 is: 383,011.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,368.17 : 679,448.31 = 277,552.72 : x
  2. Step 2: Convert to fraction form
    492,368.17/679,448.31 = 277,552.72/x
  3. Step 3: Cross multiply
    492,368.17x = 679,448.31 × 277,552.72
  4. Step 4: Simplify right side
    492,368.17x = 188,582,726,539.90
  5. Step 5: Solve for x
    x = 188,582,726,539.90/492,368.17
  6. Step 6: Final answer
    x = 383,011.61

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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.