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Finding the Fourth Proportional to 289,621.59, 399,673.94 and 162,299.67

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Solution

The fourth proportional to 289,621.59, 399,673.94 and 162,299.67 is: 223,971.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,621.59 : 399,673.94 = 162,299.67 : x
  2. Step 2: Convert to fraction form
    289,621.59/399,673.94 = 162,299.67/x
  3. Step 3: Cross multiply
    289,621.59x = 399,673.94 × 162,299.67
  4. Step 4: Simplify right side
    289,621.59x = 64,866,947,758.10
  5. Step 5: Solve for x
    x = 64,866,947,758.10/289,621.59
  6. Step 6: Final answer
    x = 223,971.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.