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Finding the Fourth Proportional to 272,911.60, 409,367.40 and 260,664.40

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Solution

The fourth proportional to 272,911.60, 409,367.40 and 260,664.40 is: 390,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,911.60 : 409,367.40 = 260,664.40 : x
  2. Step 2: Convert to fraction form
    272,911.60/409,367.40 = 260,664.40/x
  3. Step 3: Cross multiply
    272,911.60x = 409,367.40 × 260,664.40
  4. Step 4: Simplify right side
    272,911.60x = 106,707,507,700.56
  5. Step 5: Solve for x
    x = 106,707,507,700.56/272,911.60
  6. Step 6: Final answer
    x = 390,996.60

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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.