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Finding the Fourth Proportional to 351,698.80, 527,445.80 and 127,033.20

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Solution

The fourth proportional to 351,698.80, 527,445.80 and 127,033.20 is: 190,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,698.80 : 527,445.80 = 127,033.20 : x
  2. Step 2: Convert to fraction form
    351,698.80/527,445.80 = 127,033.20/x
  3. Step 3: Cross multiply
    351,698.80x = 527,445.80 × 127,033.20
  4. Step 4: Simplify right side
    351,698.80x = 67,003,127,800.56
  5. Step 5: Solve for x
    x = 67,003,127,800.56/351,698.80
  6. Step 6: Final answer
    x = 190,512.81

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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.