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Finding the Fourth Proportional to 492,065.28, 679,052.16 and 277,207.92

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Solution

The fourth proportional to 492,065.28, 679,052.16 and 277,207.92 is: 382,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,065.28 : 679,052.16 = 277,207.92 : x
  2. Step 2: Convert to fraction form
    492,065.28/679,052.16 = 277,207.92/x
  3. Step 3: Cross multiply
    492,065.28x = 679,052.16 × 277,207.92
  4. Step 4: Simplify right side
    492,065.28x = 188,238,636,845.11
  5. Step 5: Solve for x
    x = 188,238,636,845.11/492,065.28
  6. Step 6: Final answer
    x = 382,548.10

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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.