Home / 401,129.82-553,810.77-258,138.29

Finding the Fourth Proportional to 401,129.82, 553,810.77 and 258,138.29

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Solution

The fourth proportional to 401,129.82, 553,810.77 and 258,138.29 is: 356,392.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,129.82 : 553,810.77 = 258,138.29 : x
  2. Step 2: Convert to fraction form
    401,129.82/553,810.77 = 258,138.29/x
  3. Step 3: Cross multiply
    401,129.82x = 553,810.77 × 258,138.29
  4. Step 4: Simplify right side
    401,129.82x = 142,959,766,535.91
  5. Step 5: Solve for x
    x = 142,959,766,535.91/401,129.82
  6. Step 6: Final answer
    x = 356,392.77

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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.