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Finding the Fourth Proportional to 313,237.60, 469,856.40 and 76,582.60

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Solution

The fourth proportional to 313,237.60, 469,856.40 and 76,582.60 is: 114,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,237.60 : 469,856.40 = 76,582.60 : x
  2. Step 2: Convert to fraction form
    313,237.60/469,856.40 = 76,582.60/x
  3. Step 3: Cross multiply
    313,237.60x = 469,856.40 × 76,582.60
  4. Step 4: Simplify right side
    313,237.60x = 35,982,824,738.64
  5. Step 5: Solve for x
    x = 35,982,824,738.64/313,237.60
  6. Step 6: Final answer
    x = 114,873.90

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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.