Home / 292,310.40-438,433.20-81,969.60

Finding the Fourth Proportional to 292,310.40, 438,433.20 and 81,969.60

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Solution

The fourth proportional to 292,310.40, 438,433.20 and 81,969.60 is: 122,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,310.40 : 438,433.20 = 81,969.60 : x
  2. Step 2: Convert to fraction form
    292,310.40/438,433.20 = 81,969.60/x
  3. Step 3: Cross multiply
    292,310.40x = 438,433.20 × 81,969.60
  4. Step 4: Simplify right side
    292,310.40x = 35,938,194,030.72
  5. Step 5: Solve for x
    x = 35,938,194,030.72/292,310.40
  6. Step 6: Final answer
    x = 122,945.31

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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.