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Finding the Fourth Proportional to 289,426.76, 399,410.15 and 168,650.90

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Solution

The fourth proportional to 289,426.76, 399,410.15 and 168,650.90 is: 232,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,426.76 : 399,410.15 = 168,650.90 : x
  2. Step 2: Convert to fraction form
    289,426.76/399,410.15 = 168,650.90/x
  3. Step 3: Cross multiply
    289,426.76x = 399,410.15 × 168,650.90
  4. Step 4: Simplify right side
    289,426.76x = 67,360,878,426.33
  5. Step 5: Solve for x
    x = 67,360,878,426.33/289,426.76
  6. Step 6: Final answer
    x = 232,738.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.