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Finding the Fourth Proportional to 398,790.69, 550,445.00 and 226,801.37

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Solution

The fourth proportional to 398,790.69, 550,445.00 and 226,801.37 is: 313,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,790.69 : 550,445.00 = 226,801.37 : x
  2. Step 2: Convert to fraction form
    398,790.69/550,445.00 = 226,801.37/x
  3. Step 3: Cross multiply
    398,790.69x = 550,445.00 × 226,801.37
  4. Step 4: Simplify right side
    398,790.69x = 124,841,676,223.42
  5. Step 5: Solve for x
    x = 124,841,676,223.42/398,790.69
  6. Step 6: Final answer
    x = 313,050.63

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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.