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Finding the Fourth Proportional to 426,783.63, 640,275.23 and 227,058.59

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Solution

The fourth proportional to 426,783.63, 640,275.23 and 227,058.59 is: 340,640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,783.63 : 640,275.23 = 227,058.59 : x
  2. Step 2: Convert to fraction form
    426,783.63/640,275.23 = 227,058.59/x
  3. Step 3: Cross multiply
    426,783.63x = 640,275.23 × 227,058.59
  4. Step 4: Simplify right side
    426,783.63x = 145,379,993,104.06
  5. Step 5: Solve for x
    x = 145,379,993,104.06/426,783.63
  6. Step 6: Final answer
    x = 340,640.97

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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.