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Finding the Fourth Proportional to 349,112, 481,774.56 and 190,136

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Solution

The fourth proportional to 349,112, 481,774.56 and 190,136 is: 262,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,112 : 481,774.56 = 190,136 : x
  2. Step 2: Convert to fraction form
    349,112/481,774.56 = 190,136/x
  3. Step 3: Cross multiply
    349,112x = 481,774.56 × 190,136
  4. Step 4: Simplify right side
    349,112x = 91,602,687,740.16
  5. Step 5: Solve for x
    x = 91,602,687,740.16/349,112
  6. Step 6: Final answer
    x = 262,387.68

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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.