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Finding the Fourth Proportional to 368,783,545.80, 553,203,312.30 and 109,978,566.60

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Solution

The fourth proportional to 368,783,545.80, 553,203,312.30 and 109,978,566.60 is: 164,976,198.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,783,545.80 : 553,203,312.30 = 109,978,566.60 : x
  2. Step 2: Convert to fraction form
    368,783,545.80/553,203,312.30 = 109,978,566.60/x
  3. Step 3: Cross multiply
    368,783,545.80x = 553,203,312.30 × 109,978,566.60
  4. Step 4: Simplify right side
    368,783,545.80x = 60,840,507,325,126,144
  5. Step 5: Solve for x
    x = 60,840,507,325,126,144/368,783,545.80
  6. Step 6: Final answer
    x = 164,976,198.15

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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.