Home / 399,137.95-598,389-230,466.79

Finding the Fourth Proportional to 399,137.95, 598,389 and 230,466.79

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Solution

The fourth proportional to 399,137.95, 598,389 and 230,466.79 is: 345,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,137.95 : 598,389 = 230,466.79 : x
  2. Step 2: Convert to fraction form
    399,137.95/598,389 = 230,466.79/x
  3. Step 3: Cross multiply
    399,137.95x = 598,389 × 230,466.79
  4. Step 4: Simplify right side
    399,137.95x = 137,908,792,001.31
  5. Step 5: Solve for x
    x = 137,908,792,001.31/399,137.95
  6. Step 6: Final answer
    x = 345,516.61

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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.