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Finding the Fourth Proportional to 272,912.10, 409,368.15 and 260,664.90

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Solution

The fourth proportional to 272,912.10, 409,368.15 and 260,664.90 is: 390,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,912.10 : 409,368.15 = 260,664.90 : x
  2. Step 2: Convert to fraction form
    272,912.10/409,368.15 = 260,664.90/x
  3. Step 3: Cross multiply
    272,912.10x = 409,368.15 × 260,664.90
  4. Step 4: Simplify right side
    272,912.10x = 106,707,907,882.94
  5. Step 5: Solve for x
    x = 106,707,907,882.94/272,912.10
  6. Step 6: Final answer
    x = 390,997.35

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1.5x scale

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.