Home / 645,647.76-968,449.77-172,308.06

Finding the Fourth Proportional to 645,647.76, 968,449.77 and 172,308.06

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Solution

The fourth proportional to 645,647.76, 968,449.77 and 172,308.06 is: 258,456.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,647.76 : 968,449.77 = 172,308.06 : x
  2. Step 2: Convert to fraction form
    645,647.76/968,449.77 = 172,308.06/x
  3. Step 3: Cross multiply
    645,647.76x = 968,449.77 × 172,308.06
  4. Step 4: Simplify right side
    645,647.76x = 166,871,701,076.15
  5. Step 5: Solve for x
    x = 166,871,701,076.15/645,647.76
  6. Step 6: Final answer
    x = 258,456.25

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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.