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Finding the Fourth Proportional to 378,920.80, 567,632.40 and 245,893.60

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Solution

The fourth proportional to 378,920.80, 567,632.40 and 245,893.60 is: 368,354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,920.80 : 567,632.40 = 245,893.60 : x
  2. Step 2: Convert to fraction form
    378,920.80/567,632.40 = 245,893.60/x
  3. Step 3: Cross multiply
    378,920.80x = 567,632.40 × 245,893.60
  4. Step 4: Simplify right side
    378,920.80x = 139,577,174,312.64
  5. Step 5: Solve for x
    x = 139,577,174,312.64/378,920.80
  6. Step 6: Final answer
    x = 368,354.48

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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.