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Finding the Fourth Proportional to 308,744.46, 426,090.24 and 172,792.02

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Solution

The fourth proportional to 308,744.46, 426,090.24 and 172,792.02 is: 238,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,744.46 : 426,090.24 = 172,792.02 : x
  2. Step 2: Convert to fraction form
    308,744.46/426,090.24 = 172,792.02/x
  3. Step 3: Cross multiply
    308,744.46x = 426,090.24 × 172,792.02
  4. Step 4: Simplify right side
    308,744.46x = 73,624,993,271.88
  5. Step 5: Solve for x
    x = 73,624,993,271.88/308,744.46
  6. Step 6: Final answer
    x = 238,465.80

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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.