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Finding the Fourth Proportional to 401,851.78, 602,777.65 and 121,369.03

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Solution

The fourth proportional to 401,851.78, 602,777.65 and 121,369.03 is: 182,053.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,851.78 : 602,777.65 = 121,369.03 : x
  2. Step 2: Convert to fraction form
    401,851.78/602,777.65 = 121,369.03/x
  3. Step 3: Cross multiply
    401,851.78x = 602,777.65 × 121,369.03
  4. Step 4: Simplify right side
    401,851.78x = 73,158,540,494.00
  5. Step 5: Solve for x
    x = 73,158,540,494.00/401,851.78
  6. Step 6: Final answer
    x = 182,053.54

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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.