Home / 438,639.72-658,159.90-238,660.20

Finding the Fourth Proportional to 438,639.72, 658,159.90 and 238,660.20

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Solution

The fourth proportional to 438,639.72, 658,159.90 and 238,660.20 is: 358,099.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,639.72 : 658,159.90 = 238,660.20 : x
  2. Step 2: Convert to fraction form
    438,639.72/658,159.90 = 238,660.20/x
  3. Step 3: Cross multiply
    438,639.72x = 658,159.90 × 238,660.20
  4. Step 4: Simplify right side
    438,639.72x = 157,076,573,365.98
  5. Step 5: Solve for x
    x = 157,076,573,365.98/438,639.72
  6. Step 6: Final answer
    x = 358,099.29

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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.