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Finding the Fourth Proportional to 617,872.90, 926,809.35 and 218,964.10

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Solution

The fourth proportional to 617,872.90, 926,809.35 and 218,964.10 is: 328,446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,872.90 : 926,809.35 = 218,964.10 : x
  2. Step 2: Convert to fraction form
    617,872.90/926,809.35 = 218,964.10/x
  3. Step 3: Cross multiply
    617,872.90x = 926,809.35 × 218,964.10
  4. Step 4: Simplify right side
    617,872.90x = 202,937,975,194.34
  5. Step 5: Solve for x
    x = 202,937,975,194.34/617,872.90
  6. Step 6: Final answer
    x = 328,446.15

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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.