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Finding the Fourth Proportional to 248,537.80, 372,806.70 and 214,712.20

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Solution

The fourth proportional to 248,537.80, 372,806.70 and 214,712.20 is: 322,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,537.80 : 372,806.70 = 214,712.20 : x
  2. Step 2: Convert to fraction form
    248,537.80/372,806.70 = 214,712.20/x
  3. Step 3: Cross multiply
    248,537.80x = 372,806.70 × 214,712.20
  4. Step 4: Simplify right side
    248,537.80x = 80,046,146,731.74
  5. Step 5: Solve for x
    x = 80,046,146,731.74/248,537.80
  6. Step 6: Final answer
    x = 322,068.30

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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.