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Finding the Fourth Proportional to 272,032.20, 408,048.30 and 261,664.20

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Solution

The fourth proportional to 272,032.20, 408,048.30 and 261,664.20 is: 392,496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,032.20 : 408,048.30 = 261,664.20 : x
  2. Step 2: Convert to fraction form
    272,032.20/408,048.30 = 261,664.20/x
  3. Step 3: Cross multiply
    272,032.20x = 408,048.30 × 261,664.20
  4. Step 4: Simplify right side
    272,032.20x = 106,771,631,980.86
  5. Step 5: Solve for x
    x = 106,771,631,980.86/272,032.20
  6. Step 6: Final answer
    x = 392,496.30

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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.