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Finding the Fourth Proportional to 340,313.73, 510,470.60 and 90,989.25

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Solution

The fourth proportional to 340,313.73, 510,470.60 and 90,989.25 is: 136,483.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,313.73 : 510,470.60 = 90,989.25 : x
  2. Step 2: Convert to fraction form
    340,313.73/510,470.60 = 90,989.25/x
  3. Step 3: Cross multiply
    340,313.73x = 510,470.60 × 90,989.25
  4. Step 4: Simplify right side
    340,313.73x = 46,447,336,586.10
  5. Step 5: Solve for x
    x = 46,447,336,586.10/340,313.73
  6. Step 6: Final answer
    x = 136,483.88

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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.