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Finding the Fourth Proportional to 395,437.78, 545,682.10 and 223,391.04

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Solution

The fourth proportional to 395,437.78, 545,682.10 and 223,391.04 is: 308,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,437.78 : 545,682.10 = 223,391.04 : x
  2. Step 2: Convert to fraction form
    395,437.78/545,682.10 = 223,391.04/x
  3. Step 3: Cross multiply
    395,437.78x = 545,682.10 × 223,391.04
  4. Step 4: Simplify right side
    395,437.78x = 121,900,491,828.38
  5. Step 5: Solve for x
    x = 121,900,491,828.38/395,437.78
  6. Step 6: Final answer
    x = 308,267.19

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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.