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Finding the Fourth Proportional to 388,902, 536,626.44 and 219,132.48

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Solution

The fourth proportional to 388,902, 536,626.44 and 219,132.48 is: 302,369.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,902 : 536,626.44 = 219,132.48 : x
  2. Step 2: Convert to fraction form
    388,902/536,626.44 = 219,132.48/x
  3. Step 3: Cross multiply
    388,902x = 536,626.44 × 219,132.48
  4. Step 4: Simplify right side
    388,902x = 117,592,282,630.77
  5. Step 5: Solve for x
    x = 117,592,282,630.77/388,902
  6. Step 6: Final answer
    x = 302,369.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.