Home / 387,344.70-534,536.06-215,278.77

Finding the Fourth Proportional to 387,344.70, 534,536.06 and 215,278.77

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Solution

The fourth proportional to 387,344.70, 534,536.06 and 215,278.77 is: 297,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,344.70 : 534,536.06 = 215,278.77 : x
  2. Step 2: Convert to fraction form
    387,344.70/534,536.06 = 215,278.77/x
  3. Step 3: Cross multiply
    387,344.70x = 534,536.06 × 215,278.77
  4. Step 4: Simplify right side
    387,344.70x = 115,074,265,025.59
  5. Step 5: Solve for x
    x = 115,074,265,025.59/387,344.70
  6. Step 6: Final answer
    x = 297,084.91

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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.