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Finding the Fourth Proportional to 310,662.38, 465,399.90 and 260,383.25

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Solution

The fourth proportional to 310,662.38, 465,399.90 and 260,383.25 is: 390,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,662.38 : 465,399.90 = 260,383.25 : x
  2. Step 2: Convert to fraction form
    310,662.38/465,399.90 = 260,383.25/x
  3. Step 3: Cross multiply
    310,662.38x = 465,399.90 × 260,383.25
  4. Step 4: Simplify right side
    310,662.38x = 121,182,336,184.68
  5. Step 5: Solve for x
    x = 121,182,336,184.68/310,662.38
  6. Step 6: Final answer
    x = 390,077.29

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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.