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Finding the Fourth Proportional to 289,657.85, 399,744.23 and 162,341.64

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Solution

The fourth proportional to 289,657.85, 399,744.23 and 162,341.64 is: 224,040.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,657.85 : 399,744.23 = 162,341.64 : x
  2. Step 2: Convert to fraction form
    289,657.85/399,744.23 = 162,341.64/x
  3. Step 3: Cross multiply
    289,657.85x = 399,744.23 × 162,341.64
  4. Step 4: Simplify right side
    289,657.85x = 64,895,133,067.03
  5. Step 5: Solve for x
    x = 64,895,133,067.03/289,657.85
  6. Step 6: Final answer
    x = 224,040.65

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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.