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Finding the Fourth Proportional to 292,647.72, 438,965.34 and 134,876.17

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Solution

The fourth proportional to 292,647.72, 438,965.34 and 134,876.17 is: 202,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,647.72 : 438,965.34 = 134,876.17 : x
  2. Step 2: Convert to fraction form
    292,647.72/438,965.34 = 134,876.17/x
  3. Step 3: Cross multiply
    292,647.72x = 438,965.34 × 134,876.17
  4. Step 4: Simplify right side
    292,647.72x = 59,205,963,821.95
  5. Step 5: Solve for x
    x = 59,205,963,821.95/292,647.72
  6. Step 6: Final answer
    x = 202,311.38

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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.