Home / 289,171,718.61-399,056,971.69-165,412,395.74

Finding the Fourth Proportional to 289,171,718.61, 399,056,971.69 and 165,412,395.74

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Solution

The fourth proportional to 289,171,718.61, 399,056,971.69 and 165,412,395.74 is: 228,269,106.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,171,718.61 : 399,056,971.69 = 165,412,395.74 : x
  2. Step 2: Convert to fraction form
    289,171,718.61/399,056,971.69 = 165,412,395.74/x
  3. Step 3: Cross multiply
    289,171,718.61x = 399,056,971.69 × 165,412,395.74
  4. Step 4: Simplify right side
    289,171,718.61x = 66,008,969,722,702,816
  5. Step 5: Solve for x
    x = 66,008,969,722,702,816/289,171,718.61
  6. Step 6: Final answer
    x = 228,269,106.12

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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.