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Finding the Fourth Proportional to 355,614.77, 533,629.80 and 142,484.78

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Solution

The fourth proportional to 355,614.77, 533,629.80 and 142,484.78 is: 213,810.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,614.77 : 533,629.80 = 142,484.78 : x
  2. Step 2: Convert to fraction form
    355,614.77/533,629.80 = 142,484.78/x
  3. Step 3: Cross multiply
    355,614.77x = 533,629.80 × 142,484.78
  4. Step 4: Simplify right side
    355,614.77x = 76,034,121,986.30
  5. Step 5: Solve for x
    x = 76,034,121,986.30/355,614.77
  6. Step 6: Final answer
    x = 213,810.36

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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.