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Finding the Fourth Proportional to 351,300, 526,957.92 and 126,678.72

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Solution

The fourth proportional to 351,300, 526,957.92 and 126,678.72 is: 190,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,300 : 526,957.92 = 126,678.72 : x
  2. Step 2: Convert to fraction form
    351,300/526,957.92 = 126,678.72/x
  3. Step 3: Cross multiply
    351,300x = 526,957.92 × 126,678.72
  4. Step 4: Simplify right side
    351,300x = 66,754,354,799.46
  5. Step 5: Solve for x
    x = 66,754,354,799.46/351,300
  6. Step 6: Final answer
    x = 190,020.94

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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.