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Finding the Fourth Proportional to 289,820.68, 399,490.44 and 228,466.84

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Solution

The fourth proportional to 289,820.68, 399,490.44 and 228,466.84 is: 314,919.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,820.68 : 399,490.44 = 228,466.84 : x
  2. Step 2: Convert to fraction form
    289,820.68/399,490.44 = 228,466.84/x
  3. Step 3: Cross multiply
    289,820.68x = 399,490.44 × 228,466.84
  4. Step 4: Simplify right side
    289,820.68x = 91,270,318,437.01
  5. Step 5: Solve for x
    x = 91,270,318,437.01/289,820.68
  6. Step 6: Final answer
    x = 314,919.97

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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.