Home / 228,643.20-315,539.04-137,997.72

Finding the Fourth Proportional to 228,643.20, 315,539.04 and 137,997.72

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Solution

The fourth proportional to 228,643.20, 315,539.04 and 137,997.72 is: 190,443.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,643.20 : 315,539.04 = 137,997.72 : x
  2. Step 2: Convert to fraction form
    228,643.20/315,539.04 = 137,997.72/x
  3. Step 3: Cross multiply
    228,643.20x = 315,539.04 × 137,997.72
  4. Step 4: Simplify right side
    228,643.20x = 43,543,668,090.99
  5. Step 5: Solve for x
    x = 43,543,668,090.99/228,643.20
  6. Step 6: Final answer
    x = 190,443.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.