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Finding the Fourth Proportional to 292,638.42, 438,992.80 and 103,059.61

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Solution

The fourth proportional to 292,638.42, 438,992.80 and 103,059.61 is: 154,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,638.42 : 438,992.80 = 103,059.61 : x
  2. Step 2: Convert to fraction form
    292,638.42/438,992.80 = 103,059.61/x
  3. Step 3: Cross multiply
    292,638.42x = 438,992.80 × 103,059.61
  4. Step 4: Simplify right side
    292,638.42x = 45,242,425,405.68
  5. Step 5: Solve for x
    x = 45,242,425,405.68/292,638.42
  6. Step 6: Final answer
    x = 154,601.80

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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.