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Finding the Fourth Proportional to 492,076.90, 738,144.51 and 155,128.24

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Solution

The fourth proportional to 492,076.90, 738,144.51 and 155,128.24 is: 232,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,076.90 : 738,144.51 = 155,128.24 : x
  2. Step 2: Convert to fraction form
    492,076.90/738,144.51 = 155,128.24/x
  3. Step 3: Cross multiply
    492,076.90x = 738,144.51 × 155,128.24
  4. Step 4: Simplify right side
    492,076.90x = 114,507,058,701.96
  5. Step 5: Solve for x
    x = 114,507,058,701.96/492,076.90
  6. Step 6: Final answer
    x = 232,701.55

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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.