Home / 438,971.67-658,457.76-123,428.57

Finding the Fourth Proportional to 438,971.67, 658,457.76 and 123,428.57

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Solution

The fourth proportional to 438,971.67, 658,457.76 and 123,428.57 is: 185,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,971.67 : 658,457.76 = 123,428.57 : x
  2. Step 2: Convert to fraction form
    438,971.67/658,457.76 = 123,428.57/x
  3. Step 3: Cross multiply
    438,971.67x = 658,457.76 × 123,428.57
  4. Step 4: Simplify right side
    438,971.67x = 81,272,501,407.08
  5. Step 5: Solve for x
    x = 81,272,501,407.08/438,971.67
  6. Step 6: Final answer
    x = 185,142.93

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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.