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Finding the Fourth Proportional to 289,192.62, 399,081.69 and 160,118.76

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Solution

The fourth proportional to 289,192.62, 399,081.69 and 160,118.76 is: 220,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,192.62 : 399,081.69 = 160,118.76 : x
  2. Step 2: Convert to fraction form
    289,192.62/399,081.69 = 160,118.76/x
  3. Step 3: Cross multiply
    289,192.62x = 399,081.69 × 160,118.76
  4. Step 4: Simplify right side
    289,192.62x = 63,900,465,341.50
  5. Step 5: Solve for x
    x = 63,900,465,341.50/289,192.62
  6. Step 6: Final answer
    x = 220,961.60

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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.