Home / 258,822.54-388,234.08-81,345.06

Finding the Fourth Proportional to 258,822.54, 388,234.08 and 81,345.06

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Solution

The fourth proportional to 258,822.54, 388,234.08 and 81,345.06 is: 122,017.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,822.54 : 388,234.08 = 81,345.06 : x
  2. Step 2: Convert to fraction form
    258,822.54/388,234.08 = 81,345.06/x
  3. Step 3: Cross multiply
    258,822.54x = 388,234.08 × 81,345.06
  4. Step 4: Simplify right side
    258,822.54x = 31,580,924,531.64
  5. Step 5: Solve for x
    x = 31,580,924,531.64/258,822.54
  6. Step 6: Final answer
    x = 122,017.67

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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.