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Finding the Fourth Proportional to 492,235.78, 679,285.36 and 265,881.28

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Solution

The fourth proportional to 492,235.78, 679,285.36 and 265,881.28 is: 366,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,235.78 : 679,285.36 = 265,881.28 : x
  2. Step 2: Convert to fraction form
    492,235.78/679,285.36 = 265,881.28/x
  3. Step 3: Cross multiply
    492,235.78x = 679,285.36 × 265,881.28
  4. Step 4: Simplify right side
    492,235.78x = 180,609,261,002.06
  5. Step 5: Solve for x
    x = 180,609,261,002.06/492,235.78
  6. Step 6: Final answer
    x = 366,916.16

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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.