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Finding the Fourth Proportional to 395,507.33, 545,799.88 and 214,219.21

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Solution

The fourth proportional to 395,507.33, 545,799.88 and 214,219.21 is: 295,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,507.33 : 545,799.88 = 214,219.21 : x
  2. Step 2: Convert to fraction form
    395,507.33/545,799.88 = 214,219.21/x
  3. Step 3: Cross multiply
    395,507.33x = 545,799.88 × 214,219.21
  4. Step 4: Simplify right side
    395,507.33x = 116,920,818,014.97
  5. Step 5: Solve for x
    x = 116,920,818,014.97/395,507.33
  6. Step 6: Final answer
    x = 295,622.38

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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.