Home / 387,278.16-534,450.72-215,211.84

Finding the Fourth Proportional to 387,278.16, 534,450.72 and 215,211.84

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Solution

The fourth proportional to 387,278.16, 534,450.72 and 215,211.84 is: 296,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,278.16 : 534,450.72 = 215,211.84 : x
  2. Step 2: Convert to fraction form
    387,278.16/534,450.72 = 215,211.84/x
  3. Step 3: Cross multiply
    387,278.16x = 534,450.72 × 215,211.84
  4. Step 4: Simplify right side
    387,278.16x = 115,020,122,840.53
  5. Step 5: Solve for x
    x = 115,020,122,840.53/387,278.16
  6. Step 6: Final answer
    x = 296,996.15

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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.