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Finding the Fourth Proportional to 378,630.45, 567,779.52 and 141,807.00

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Solution

The fourth proportional to 378,630.45, 567,779.52 and 141,807.00 is: 212,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,630.45 : 567,779.52 = 141,807.00 : x
  2. Step 2: Convert to fraction form
    378,630.45/567,779.52 = 141,807.00/x
  3. Step 3: Cross multiply
    378,630.45x = 567,779.52 × 141,807.00
  4. Step 4: Simplify right side
    378,630.45x = 80,515,113,053.59
  5. Step 5: Solve for x
    x = 80,515,113,053.59/378,630.45
  6. Step 6: Final answer
    x = 212,648.28

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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.