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Finding the Fourth Proportional to 272,903.18, 408,745.85 and 209,254.79

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Solution

The fourth proportional to 272,903.18, 408,745.85 and 209,254.79 is: 313,415.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,903.18 : 408,745.85 = 209,254.79 : x
  2. Step 2: Convert to fraction form
    272,903.18/408,745.85 = 209,254.79/x
  3. Step 3: Cross multiply
    272,903.18x = 408,745.85 × 209,254.79
  4. Step 4: Simplify right side
    272,903.18x = 85,532,026,980.71
  5. Step 5: Solve for x
    x = 85,532,026,980.71/272,903.18
  6. Step 6: Final answer
    x = 313,415.29

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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.