Home / 387,154.51-534,288.30-215,085.46

Finding the Fourth Proportional to 387,154.51, 534,288.30 and 215,085.46

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Solution

The fourth proportional to 387,154.51, 534,288.30 and 215,085.46 is: 296,826.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,154.51 : 534,288.30 = 215,085.46 : x
  2. Step 2: Convert to fraction form
    387,154.51/534,288.30 = 215,085.46/x
  3. Step 3: Cross multiply
    387,154.51x = 534,288.30 × 215,085.46
  4. Step 4: Simplify right side
    387,154.51x = 114,917,644,778.12
  5. Step 5: Solve for x
    x = 114,917,644,778.12/387,154.51
  6. Step 6: Final answer
    x = 296,826.31

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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.