Home / 387,916.20-535,317.90-215,832.36

Finding the Fourth Proportional to 387,916.20, 535,317.90 and 215,832.36

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Solution

The fourth proportional to 387,916.20, 535,317.90 and 215,832.36 is: 297,845.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,916.20 : 535,317.90 = 215,832.36 : x
  2. Step 2: Convert to fraction form
    387,916.20/535,317.90 = 215,832.36/x
  3. Step 3: Cross multiply
    387,916.20x = 535,317.90 × 215,832.36
  4. Step 4: Simplify right side
    387,916.20x = 115,538,925,707.24
  5. Step 5: Solve for x
    x = 115,538,925,707.24/387,916.20
  6. Step 6: Final answer
    x = 297,845.06

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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.