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Finding the Fourth Proportional to 292,276.79, 438,427.95 and 92,611.89

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Solution

The fourth proportional to 292,276.79, 438,427.95 and 92,611.89 is: 138,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,276.79 : 438,427.95 = 92,611.89 : x
  2. Step 2: Convert to fraction form
    292,276.79/438,427.95 = 92,611.89/x
  3. Step 3: Cross multiply
    292,276.79x = 438,427.95 × 92,611.89
  4. Step 4: Simplify right side
    292,276.79x = 40,603,641,078.33
  5. Step 5: Solve for x
    x = 40,603,641,078.33/292,276.79
  6. Step 6: Final answer
    x = 138,921.88

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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.