Home / 387,531.72-534,800.21-213,109.29

Finding the Fourth Proportional to 387,531.72, 534,800.21 and 213,109.29

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Solution

The fourth proportional to 387,531.72, 534,800.21 and 213,109.29 is: 294,094.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,531.72 : 534,800.21 = 213,109.29 : x
  2. Step 2: Convert to fraction form
    387,531.72/534,800.21 = 213,109.29/x
  3. Step 3: Cross multiply
    387,531.72x = 534,800.21 × 213,109.29
  4. Step 4: Simplify right side
    387,531.72x = 113,970,891,979.40
  5. Step 5: Solve for x
    x = 113,970,891,979.40/387,531.72
  6. Step 6: Final answer
    x = 294,094.36

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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.