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Finding the Fourth Proportional to 230,970.50, 318,740.26 and 124,986.50

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Solution

The fourth proportional to 230,970.50, 318,740.26 and 124,986.50 is: 172,481.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,970.50 : 318,740.26 = 124,986.50 : x
  2. Step 2: Convert to fraction form
    230,970.50/318,740.26 = 124,986.50/x
  3. Step 3: Cross multiply
    230,970.50x = 318,740.26 × 124,986.50
  4. Step 4: Simplify right side
    230,970.50x = 39,838,229,506.49
  5. Step 5: Solve for x
    x = 39,838,229,506.49/230,970.50
  6. Step 6: Final answer
    x = 172,481.89

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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.