Home / 438,821.40-658,232.10-261,528.60

Finding the Fourth Proportional to 438,821.40, 658,232.10 and 261,528.60

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Solution

The fourth proportional to 438,821.40, 658,232.10 and 261,528.60 is: 392,292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,821.40 : 658,232.10 = 261,528.60 : x
  2. Step 2: Convert to fraction form
    438,821.40/658,232.10 = 261,528.60/x
  3. Step 3: Cross multiply
    438,821.40x = 658,232.10 × 261,528.60
  4. Step 4: Simplify right side
    438,821.40x = 172,146,519,588.06
  5. Step 5: Solve for x
    x = 172,146,519,588.06/438,821.40
  6. Step 6: Final answer
    x = 392,292.90

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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.