Home / 285,670.48-428,136.65-135,956.66

Finding the Fourth Proportional to 285,670.48, 428,136.65 and 135,956.66

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Solution

The fourth proportional to 285,670.48, 428,136.65 and 135,956.66 is: 203,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,670.48 : 428,136.65 = 135,956.66 : x
  2. Step 2: Convert to fraction form
    285,670.48/428,136.65 = 135,956.66/x
  3. Step 3: Cross multiply
    285,670.48x = 428,136.65 × 135,956.66
  4. Step 4: Simplify right side
    285,670.48x = 58,208,029,819.98
  5. Step 5: Solve for x
    x = 58,208,029,819.98/285,670.48
  6. Step 6: Final answer
    x = 203,759.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.