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Finding the Fourth Proportional to 399,039.45, 550,484.19 and 270,023.19

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Solution

The fourth proportional to 399,039.45, 550,484.19 and 270,023.19 is: 372,503.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,039.45 : 550,484.19 = 270,023.19 : x
  2. Step 2: Convert to fraction form
    399,039.45/550,484.19 = 270,023.19/x
  3. Step 3: Cross multiply
    399,039.45x = 550,484.19 × 270,023.19
  4. Step 4: Simplify right side
    399,039.45x = 148,643,497,028.37
  5. Step 5: Solve for x
    x = 148,643,497,028.37/399,039.45
  6. Step 6: Final answer
    x = 372,503.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.