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Finding the Fourth Proportional to 368,151.40, 551,838.30 and 210,039.40

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Solution

The fourth proportional to 368,151.40, 551,838.30 and 210,039.40 is: 314,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,151.40 : 551,838.30 = 210,039.40 : x
  2. Step 2: Convert to fraction form
    368,151.40/551,838.30 = 210,039.40/x
  3. Step 3: Cross multiply
    368,151.40x = 551,838.30 × 210,039.40
  4. Step 4: Simplify right side
    368,151.40x = 115,907,785,429.02
  5. Step 5: Solve for x
    x = 115,907,785,429.02/368,151.40
  6. Step 6: Final answer
    x = 314,837.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.