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Finding the Fourth Proportional to 292,920.57, 439,380.90 and 105,888.33

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Solution

The fourth proportional to 292,920.57, 439,380.90 and 105,888.33 is: 158,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,920.57 : 439,380.90 = 105,888.33 : x
  2. Step 2: Convert to fraction form
    292,920.57/439,380.90 = 105,888.33/x
  3. Step 3: Cross multiply
    292,920.57x = 439,380.90 × 105,888.33
  4. Step 4: Simplify right side
    292,920.57x = 46,525,309,734.90
  5. Step 5: Solve for x
    x = 46,525,309,734.90/292,920.57
  6. Step 6: Final answer
    x = 158,832.51

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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.