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Finding the Fourth Proportional to 228,116.55, 341,894.57 and 128,066.97

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Solution

The fourth proportional to 228,116.55, 341,894.57 and 128,066.97 is: 191,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,116.55 : 341,894.57 = 128,066.97 : x
  2. Step 2: Convert to fraction form
    228,116.55/341,894.57 = 128,066.97/x
  3. Step 3: Cross multiply
    228,116.55x = 341,894.57 × 128,066.97
  4. Step 4: Simplify right side
    228,116.55x = 43,785,400,999.02
  5. Step 5: Solve for x
    x = 43,785,400,999.02/228,116.55
  6. Step 6: Final answer
    x = 191,943.11

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1.5x scale

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.