Home / 376,780.36-519,956.06-215,638.55

Finding the Fourth Proportional to 376,780.36, 519,956.06 and 215,638.55

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Solution

The fourth proportional to 376,780.36, 519,956.06 and 215,638.55 is: 297,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,780.36 : 519,956.06 = 215,638.55 : x
  2. Step 2: Convert to fraction form
    376,780.36/519,956.06 = 215,638.55/x
  3. Step 3: Cross multiply
    376,780.36x = 519,956.06 × 215,638.55
  4. Step 4: Simplify right side
    376,780.36x = 112,122,571,063.81
  5. Step 5: Solve for x
    x = 112,122,571,063.81/376,780.36
  6. Step 6: Final answer
    x = 297,580.72

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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.