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Finding the Fourth Proportional to 292,039.40, 438,059.10 and 192,506.60

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Solution

The fourth proportional to 292,039.40, 438,059.10 and 192,506.60 is: 288,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,039.40 : 438,059.10 = 192,506.60 : x
  2. Step 2: Convert to fraction form
    292,039.40/438,059.10 = 192,506.60/x
  3. Step 3: Cross multiply
    292,039.40x = 438,059.10 × 192,506.60
  4. Step 4: Simplify right side
    292,039.40x = 84,329,267,940.06
  5. Step 5: Solve for x
    x = 84,329,267,940.06/292,039.40
  6. Step 6: Final answer
    x = 288,759.90

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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.