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Finding the Fourth Proportional to 393,998, 590,997 and 98,510

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Solution

The fourth proportional to 393,998, 590,997 and 98,510 is: 147,765

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,998 : 590,997 = 98,510 : x
  2. Step 2: Convert to fraction form
    393,998/590,997 = 98,510/x
  3. Step 3: Cross multiply
    393,998x = 590,997 × 98,510
  4. Step 4: Simplify right side
    393,998x = 58,219,114,470
  5. Step 5: Solve for x
    x = 58,219,114,470/393,998
  6. Step 6: Final answer
    x = 147,765

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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.