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Finding the Fourth Proportional to 538,327.69, 742,732.84 and 320,361.63

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Solution

The fourth proportional to 538,327.69, 742,732.84 and 320,361.63 is: 442,004.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,327.69 : 742,732.84 = 320,361.63 : x
  2. Step 2: Convert to fraction form
    538,327.69/742,732.84 = 320,361.63/x
  3. Step 3: Cross multiply
    538,327.69x = 742,732.84 × 320,361.63
  4. Step 4: Simplify right side
    538,327.69x = 237,943,101,936.60
  5. Step 5: Solve for x
    x = 237,943,101,936.60/538,327.69
  6. Step 6: Final answer
    x = 442,004.21

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1.5x scale

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.