Home / 285,995,383.75-428,929,231.78-132,621,510.79

Finding the Fourth Proportional to 285,995,383.75, 428,929,231.78 and 132,621,510.79

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Solution

The fourth proportional to 285,995,383.75, 428,929,231.78 and 132,621,510.79 is: 198,902,660.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,995,383.75 : 428,929,231.78 = 132,621,510.79 : x
  2. Step 2: Convert to fraction form
    285,995,383.75/428,929,231.78 = 132,621,510.79/x
  3. Step 3: Cross multiply
    285,995,383.75x = 428,929,231.78 × 132,621,510.79
  4. Step 4: Simplify right side
    285,995,383.75x = 56,885,242,740,657,680
  5. Step 5: Solve for x
    x = 56,885,242,740,657,680/285,995,383.75
  6. Step 6: Final answer
    x = 198,902,660.58

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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.