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Finding the Fourth Proportional to 312,430.96, 468,018.89 and 143,716.67

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Solution

The fourth proportional to 312,430.96, 468,018.89 and 143,716.67 is: 215,286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,430.96 : 468,018.89 = 143,716.67 : x
  2. Step 2: Convert to fraction form
    312,430.96/468,018.89 = 143,716.67/x
  3. Step 3: Cross multiply
    312,430.96x = 468,018.89 × 143,716.67
  4. Step 4: Simplify right side
    312,430.96x = 67,262,116,367.90
  5. Step 5: Solve for x
    x = 67,262,116,367.90/312,430.96
  6. Step 6: Final answer
    x = 215,286.34

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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.