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Finding the Fourth Proportional to 378,705.02, 567,891.20 and 141,881.60

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Solution

The fourth proportional to 378,705.02, 567,891.20 and 141,881.60 is: 212,760.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,705.02 : 567,891.20 = 141,881.60 : x
  2. Step 2: Convert to fraction form
    378,705.02/567,891.20 = 141,881.60/x
  3. Step 3: Cross multiply
    378,705.02x = 567,891.20 × 141,881.60
  4. Step 4: Simplify right side
    378,705.02x = 80,573,312,081.92
  5. Step 5: Solve for x
    x = 80,573,312,081.92/378,705.02
  6. Step 6: Final answer
    x = 212,760.08

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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.