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Finding the Fourth Proportional to 272,848.40, 409,272.60 and 115,254.80

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Solution

The fourth proportional to 272,848.40, 409,272.60 and 115,254.80 is: 172,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,848.40 : 409,272.60 = 115,254.80 : x
  2. Step 2: Convert to fraction form
    272,848.40/409,272.60 = 115,254.80/x
  3. Step 3: Cross multiply
    272,848.40x = 409,272.60 × 115,254.80
  4. Step 4: Simplify right side
    272,848.40x = 47,170,631,658.48
  5. Step 5: Solve for x
    x = 47,170,631,658.48/272,848.40
  6. Step 6: Final answer
    x = 172,882.20

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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.