Home / 438,810.40-658,021.20-202,225.60

Finding the Fourth Proportional to 438,810.40, 658,021.20 and 202,225.60

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Solution

The fourth proportional to 438,810.40, 658,021.20 and 202,225.60 is: 303,248.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,810.40 : 658,021.20 = 202,225.60 : x
  2. Step 2: Convert to fraction form
    438,810.40/658,021.20 = 202,225.60/x
  3. Step 3: Cross multiply
    438,810.40x = 658,021.20 × 202,225.60
  4. Step 4: Simplify right side
    438,810.40x = 133,068,731,982.72
  5. Step 5: Solve for x
    x = 133,068,731,982.72/438,810.40
  6. Step 6: Final answer
    x = 303,248.81

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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.