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Finding the Fourth Proportional to 368,650.79, 552,090.45 and 210,399.47

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Solution

The fourth proportional to 368,650.79, 552,090.45 and 210,399.47 is: 315,093.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,650.79 : 552,090.45 = 210,399.47 : x
  2. Step 2: Convert to fraction form
    368,650.79/552,090.45 = 210,399.47/x
  3. Step 3: Cross multiply
    368,650.79x = 552,090.45 × 210,399.47
  4. Step 4: Simplify right side
    368,650.79x = 116,159,538,072.06
  5. Step 5: Solve for x
    x = 116,159,538,072.06/368,650.79
  6. Step 6: Final answer
    x = 315,093.69

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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.