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Finding the Fourth Proportional to 393,487.88, 590,237.08 and 123,607.22

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Solution

The fourth proportional to 393,487.88, 590,237.08 and 123,607.22 is: 185,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,487.88 : 590,237.08 = 123,607.22 : x
  2. Step 2: Convert to fraction form
    393,487.88/590,237.08 = 123,607.22/x
  3. Step 3: Cross multiply
    393,487.88x = 590,237.08 × 123,607.22
  4. Step 4: Simplify right side
    393,487.88x = 72,957,561,339.51
  5. Step 5: Solve for x
    x = 72,957,561,339.51/393,487.88
  6. Step 6: Final answer
    x = 185,412.48

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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.