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Finding the Fourth Proportional to 292,382.20, 439,739.70 and 262,055.80

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Solution

The fourth proportional to 292,382.20, 439,739.70 and 262,055.80 is: 394,129.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,382.20 : 439,739.70 = 262,055.80 : x
  2. Step 2: Convert to fraction form
    292,382.20/439,739.70 = 262,055.80/x
  3. Step 3: Cross multiply
    292,382.20x = 439,739.70 × 262,055.80
  4. Step 4: Simplify right side
    292,382.20x = 115,236,338,875.26
  5. Step 5: Solve for x
    x = 115,236,338,875.26/292,382.20
  6. Step 6: Final answer
    x = 394,129.12

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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.