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Finding the Fourth Proportional to 552,670.20, 829,005.30 and 272,129.40

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Solution

The fourth proportional to 552,670.20, 829,005.30 and 272,129.40 is: 408,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,670.20 : 829,005.30 = 272,129.40 : x
  2. Step 2: Convert to fraction form
    552,670.20/829,005.30 = 272,129.40/x
  3. Step 3: Cross multiply
    552,670.20x = 829,005.30 × 272,129.40
  4. Step 4: Simplify right side
    552,670.20x = 225,596,714,885.82
  5. Step 5: Solve for x
    x = 225,596,714,885.82/552,670.20
  6. Step 6: Final answer
    x = 408,194.10

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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.