Home / 258,173.30-386,930.08-208,276.90

Finding the Fourth Proportional to 258,173.30, 386,930.08 and 208,276.90

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Solution

The fourth proportional to 258,173.30, 386,930.08 and 208,276.90 is: 312,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,173.30 : 386,930.08 = 208,276.90 : x
  2. Step 2: Convert to fraction form
    258,173.30/386,930.08 = 208,276.90/x
  3. Step 3: Cross multiply
    258,173.30x = 386,930.08 × 208,276.90
  4. Step 4: Simplify right side
    258,173.30x = 80,588,594,603.12
  5. Step 5: Solve for x
    x = 80,588,594,603.12/258,173.30
  6. Step 6: Final answer
    x = 312,149.22

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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.