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Finding the Fourth Proportional to 212,238.98, 317,957.36 and 125,425.86

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Solution

The fourth proportional to 212,238.98, 317,957.36 and 125,425.86 is: 187,901.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,238.98 : 317,957.36 = 125,425.86 : x
  2. Step 2: Convert to fraction form
    212,238.98/317,957.36 = 125,425.86/x
  3. Step 3: Cross multiply
    212,238.98x = 317,957.36 × 125,425.86
  4. Step 4: Simplify right side
    212,238.98x = 39,880,075,321.33
  5. Step 5: Solve for x
    x = 39,880,075,321.33/212,238.98
  6. Step 6: Final answer
    x = 187,901.75

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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.