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Finding the Fourth Proportional to 228,291.43, 315,168.86 and 137,670.35

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Solution

The fourth proportional to 228,291.43, 315,168.86 and 137,670.35 is: 190,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,291.43 : 315,168.86 = 137,670.35 : x
  2. Step 2: Convert to fraction form
    228,291.43/315,168.86 = 137,670.35/x
  3. Step 3: Cross multiply
    228,291.43x = 315,168.86 × 137,670.35
  4. Step 4: Simplify right side
    228,291.43x = 43,389,407,265.30
  5. Step 5: Solve for x
    x = 43,389,407,265.30/228,291.43
  6. Step 6: Final answer
    x = 190,061.48

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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.