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Finding the Fourth Proportional to 210,235.97, 315,385.16 and 68,033.58

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Solution

The fourth proportional to 210,235.97, 315,385.16 and 68,033.58 is: 102,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,235.97 : 315,385.16 = 68,033.58 : x
  2. Step 2: Convert to fraction form
    210,235.97/315,385.16 = 68,033.58/x
  3. Step 3: Cross multiply
    210,235.97x = 315,385.16 × 68,033.58
  4. Step 4: Simplify right side
    210,235.97x = 21,456,781,173.50
  5. Step 5: Solve for x
    x = 21,456,781,173.50/210,235.97
  6. Step 6: Final answer
    x = 102,060.47

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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.