Home / 378,047.27-521,704.94-208,281.39

Finding the Fourth Proportional to 378,047.27, 521,704.94 and 208,281.39

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Solution

The fourth proportional to 378,047.27, 521,704.94 and 208,281.39 is: 287,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,047.27 : 521,704.94 = 208,281.39 : x
  2. Step 2: Convert to fraction form
    378,047.27/521,704.94 = 208,281.39/x
  3. Step 3: Cross multiply
    378,047.27x = 521,704.94 × 208,281.39
  4. Step 4: Simplify right side
    378,047.27x = 108,661,429,031.66
  5. Step 5: Solve for x
    x = 108,661,429,031.66/378,047.27
  6. Step 6: Final answer
    x = 287,428.16

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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.