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Finding the Fourth Proportional to 289,697.02, 399,780.62 and 162,372.62

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Solution

The fourth proportional to 289,697.02, 399,780.62 and 162,372.62 is: 224,073.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,697.02 : 399,780.62 = 162,372.62 : x
  2. Step 2: Convert to fraction form
    289,697.02/399,780.62 = 162,372.62/x
  3. Step 3: Cross multiply
    289,697.02x = 399,780.62 × 162,372.62
  4. Step 4: Simplify right side
    289,697.02x = 64,913,426,694.62
  5. Step 5: Solve for x
    x = 64,913,426,694.62/289,697.02
  6. Step 6: Final answer
    x = 224,073.51

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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.