Home / 378,176.90-521,884.13-208,411.03

Finding the Fourth Proportional to 378,176.90, 521,884.13 and 208,411.03

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Solution

The fourth proportional to 378,176.90, 521,884.13 and 208,411.03 is: 287,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,176.90 : 521,884.13 = 208,411.03 : x
  2. Step 2: Convert to fraction form
    378,176.90/521,884.13 = 208,411.03/x
  3. Step 3: Cross multiply
    378,176.90x = 521,884.13 × 208,411.03
  4. Step 4: Simplify right side
    378,176.90x = 108,766,406,464.53
  5. Step 5: Solve for x
    x = 108,766,406,464.53/378,176.90
  6. Step 6: Final answer
    x = 287,607.22

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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.