Home / 387,782.14-535,171.67-215,732.51

Finding the Fourth Proportional to 387,782.14, 535,171.67 and 215,732.51

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Solution

The fourth proportional to 387,782.14, 535,171.67 and 215,732.51 is: 297,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,782.14 : 535,171.67 = 215,732.51 : x
  2. Step 2: Convert to fraction form
    387,782.14/535,171.67 = 215,732.51/x
  3. Step 3: Cross multiply
    387,782.14x = 535,171.67 × 215,732.51
  4. Step 4: Simplify right side
    387,782.14x = 115,453,930,366.37
  5. Step 5: Solve for x
    x = 115,453,930,366.37/387,782.14
  6. Step 6: Final answer
    x = 297,728.85

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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.