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Finding the Fourth Proportional to 292,141.84, 438,168.78 and 92,436.22

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Solution

The fourth proportional to 292,141.84, 438,168.78 and 92,436.22 is: 138,640.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,141.84 : 438,168.78 = 92,436.22 : x
  2. Step 2: Convert to fraction form
    292,141.84/438,168.78 = 92,436.22/x
  3. Step 3: Cross multiply
    292,141.84x = 438,168.78 × 92,436.22
  4. Step 4: Simplify right side
    292,141.84x = 40,502,665,745.21
  5. Step 5: Solve for x
    x = 40,502,665,745.21/292,141.84
  6. Step 6: Final answer
    x = 138,640.41

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1.5x scale

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.