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Finding the Fourth Proportional to 307,218.40, 460,827.60 and 272,226.40

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Solution

The fourth proportional to 307,218.40, 460,827.60 and 272,226.40 is: 408,339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,218.40 : 460,827.60 = 272,226.40 : x
  2. Step 2: Convert to fraction form
    307,218.40/460,827.60 = 272,226.40/x
  3. Step 3: Cross multiply
    307,218.40x = 460,827.60 × 272,226.40
  4. Step 4: Simplify right side
    307,218.40x = 125,449,438,568.64
  5. Step 5: Solve for x
    x = 125,449,438,568.64/307,218.40
  6. Step 6: Final answer
    x = 408,339.60

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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.