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Finding the Fourth Proportional to 229,084.11, 316,153.44 and 127,128.92

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Solution

The fourth proportional to 229,084.11, 316,153.44 and 127,128.92 is: 175,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,084.11 : 316,153.44 = 127,128.92 : x
  2. Step 2: Convert to fraction form
    229,084.11/316,153.44 = 127,128.92/x
  3. Step 3: Cross multiply
    229,084.11x = 316,153.44 × 127,128.92
  4. Step 4: Simplify right side
    229,084.11x = 40,192,243,800.72
  5. Step 5: Solve for x
    x = 40,192,243,800.72/229,084.11
  6. Step 6: Final answer
    x = 175,447.54

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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.