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Finding the Fourth Proportional to 292,376.78, 438,580.72 and 92,712.92

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Solution

The fourth proportional to 292,376.78, 438,580.72 and 92,712.92 is: 139,074.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,376.78 : 438,580.72 = 92,712.92 : x
  2. Step 2: Convert to fraction form
    292,376.78/438,580.72 = 92,712.92/x
  3. Step 3: Cross multiply
    292,376.78x = 438,580.72 × 92,712.92
  4. Step 4: Simplify right side
    292,376.78x = 40,662,099,206.90
  5. Step 5: Solve for x
    x = 40,662,099,206.90/292,376.78
  6. Step 6: Final answer
    x = 139,074.31

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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.