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Finding the Fourth Proportional to 292,408.42, 438,628.29 and 92,743.96

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Solution

The fourth proportional to 292,408.42, 438,628.29 and 92,743.96 is: 139,120.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,408.42 : 438,628.29 = 92,743.96 : x
  2. Step 2: Convert to fraction form
    292,408.42/438,628.29 = 92,743.96/x
  3. Step 3: Cross multiply
    292,408.42x = 438,628.29 × 92,743.96
  4. Step 4: Simplify right side
    292,408.42x = 40,680,124,582.63
  5. Step 5: Solve for x
    x = 40,680,124,582.63/292,408.42
  6. Step 6: Final answer
    x = 139,120.91

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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.