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Finding the Fourth Proportional to 272,807.70, 409,211.55 and 123,216.90

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Solution

The fourth proportional to 272,807.70, 409,211.55 and 123,216.90 is: 184,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,807.70 : 409,211.55 = 123,216.90 : x
  2. Step 2: Convert to fraction form
    272,807.70/409,211.55 = 123,216.90/x
  3. Step 3: Cross multiply
    272,807.70x = 409,211.55 × 123,216.90
  4. Step 4: Simplify right side
    272,807.70x = 50,421,778,635.20
  5. Step 5: Solve for x
    x = 50,421,778,635.20/272,807.70
  6. Step 6: Final answer
    x = 184,825.35

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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.