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Finding the Fourth Proportional to 312,429.96, 468,017.39 and 143,715.67

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Solution

The fourth proportional to 312,429.96, 468,017.39 and 143,715.67 is: 215,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,429.96 : 468,017.39 = 143,715.67 : x
  2. Step 2: Convert to fraction form
    312,429.96/468,017.39 = 143,715.67/x
  3. Step 3: Cross multiply
    312,429.96x = 468,017.39 × 143,715.67
  4. Step 4: Simplify right side
    312,429.96x = 67,261,431,964.75
  5. Step 5: Solve for x
    x = 67,261,431,964.75/312,429.96
  6. Step 6: Final answer
    x = 215,284.83

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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.