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Finding the Fourth Proportional to 435,172.80, 652,728.36 and 115,317.58

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Solution

The fourth proportional to 435,172.80, 652,728.36 and 115,317.58 is: 172,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,172.80 : 652,728.36 = 115,317.58 : x
  2. Step 2: Convert to fraction form
    435,172.80/652,728.36 = 115,317.58/x
  3. Step 3: Cross multiply
    435,172.80x = 652,728.36 × 115,317.58
  4. Step 4: Simplify right side
    435,172.80x = 75,271,054,872.57
  5. Step 5: Solve for x
    x = 75,271,054,872.57/435,172.80
  6. Step 6: Final answer
    x = 172,968.20

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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.