Home / 378,140.27-521,830.76-208,374.39

Finding the Fourth Proportional to 378,140.27, 521,830.76 and 208,374.39

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Solution

The fourth proportional to 378,140.27, 521,830.76 and 208,374.39 is: 287,555.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,140.27 : 521,830.76 = 208,374.39 : x
  2. Step 2: Convert to fraction form
    378,140.27/521,830.76 = 208,374.39/x
  3. Step 3: Cross multiply
    378,140.27x = 521,830.76 × 208,374.39
  4. Step 4: Simplify right side
    378,140.27x = 108,736,165,256.36
  5. Step 5: Solve for x
    x = 108,736,165,256.36/378,140.27
  6. Step 6: Final answer
    x = 287,555.11

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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.