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Finding the Fourth Proportional to 289,697.22, 399,774.99 and 160,636.20

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Solution

The fourth proportional to 289,697.22, 399,774.99 and 160,636.20 is: 221,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,697.22 : 399,774.99 = 160,636.20 : x
  2. Step 2: Convert to fraction form
    289,697.22/399,774.99 = 160,636.20/x
  3. Step 3: Cross multiply
    289,697.22x = 399,774.99 × 160,636.20
  4. Step 4: Simplify right side
    289,697.22x = 64,218,335,248.64
  5. Step 5: Solve for x
    x = 64,218,335,248.64/289,697.22
  6. Step 6: Final answer
    x = 221,673.98

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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.