Home / 387,916.80-582,051.84-188,129.28

Finding the Fourth Proportional to 387,916.80, 582,051.84 and 188,129.28

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Solution

The fourth proportional to 387,916.80, 582,051.84 and 188,129.28 is: 282,279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,916.80 : 582,051.84 = 188,129.28 : x
  2. Step 2: Convert to fraction form
    387,916.80/582,051.84 = 188,129.28/x
  3. Step 3: Cross multiply
    387,916.80x = 582,051.84 × 188,129.28
  4. Step 4: Simplify right side
    387,916.80x = 109,500,993,581.88
  5. Step 5: Solve for x
    x = 109,500,993,581.88/387,916.80
  6. Step 6: Final answer
    x = 282,279.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.