Home / 387,954.15-535,377.09-215,887.87

Finding the Fourth Proportional to 387,954.15, 535,377.09 and 215,887.87

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Solution

The fourth proportional to 387,954.15, 535,377.09 and 215,887.87 is: 297,925.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,954.15 : 535,377.09 = 215,887.87 : x
  2. Step 2: Convert to fraction form
    387,954.15/535,377.09 = 215,887.87/x
  3. Step 3: Cross multiply
    387,954.15x = 535,377.09 × 215,887.87
  4. Step 4: Simplify right side
    387,954.15x = 115,581,419,606.90
  5. Step 5: Solve for x
    x = 115,581,419,606.90/387,954.15
  6. Step 6: Final answer
    x = 297,925.46

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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.