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Finding the Fourth Proportional to 384,812.62, 530,995.41 and 212,707.34

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Solution

The fourth proportional to 384,812.62, 530,995.41 and 212,707.34 is: 293,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,812.62 : 530,995.41 = 212,707.34 : x
  2. Step 2: Convert to fraction form
    384,812.62/530,995.41 = 212,707.34/x
  3. Step 3: Cross multiply
    384,812.62x = 530,995.41 × 212,707.34
  4. Step 4: Simplify right side
    384,812.62x = 112,946,621,213.31
  5. Step 5: Solve for x
    x = 112,946,621,213.31/384,812.62
  6. Step 6: Final answer
    x = 293,510.70

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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.