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Finding the Fourth Proportional to 621,851.10, 933,007.05 and 248,142.30

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Solution

The fourth proportional to 621,851.10, 933,007.05 and 248,142.30 is: 372,305.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,851.10 : 933,007.05 = 248,142.30 : x
  2. Step 2: Convert to fraction form
    621,851.10/933,007.05 = 248,142.30/x
  3. Step 3: Cross multiply
    621,851.10x = 933,007.05 × 248,142.30
  4. Step 4: Simplify right side
    621,851.10x = 231,518,515,303.22
  5. Step 5: Solve for x
    x = 231,518,515,303.22/621,851.10
  6. Step 6: Final answer
    x = 372,305.39

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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.