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Finding the Fourth Proportional to 228,333.90, 315,227.46 and 137,712.72

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Solution

The fourth proportional to 228,333.90, 315,227.46 and 137,712.72 is: 190,119.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,333.90 : 315,227.46 = 137,712.72 : x
  2. Step 2: Convert to fraction form
    228,333.90/315,227.46 = 137,712.72/x
  3. Step 3: Cross multiply
    228,333.90x = 315,227.46 × 137,712.72
  4. Step 4: Simplify right side
    228,333.90x = 43,410,830,935.29
  5. Step 5: Solve for x
    x = 43,410,830,935.29/228,333.90
  6. Step 6: Final answer
    x = 190,119.96

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1.5x scale

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.