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Finding the Fourth Proportional to 427,607.31, 590,110.34 and 236,638.47

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Solution

The fourth proportional to 427,607.31, 590,110.34 and 236,638.47 is: 326,567.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,607.31 : 590,110.34 = 236,638.47 : x
  2. Step 2: Convert to fraction form
    427,607.31/590,110.34 = 236,638.47/x
  3. Step 3: Cross multiply
    427,607.31x = 590,110.34 × 236,638.47
  4. Step 4: Simplify right side
    427,607.31x = 139,642,806,805.59
  5. Step 5: Solve for x
    x = 139,642,806,805.59/427,607.31
  6. Step 6: Final answer
    x = 326,567.87

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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.