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Finding the Fourth Proportional to 399,187.36, 598,559.51 and 132,802.46

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Solution

The fourth proportional to 399,187.36, 598,559.51 and 132,802.46 is: 199,129.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,187.36 : 598,559.51 = 132,802.46 : x
  2. Step 2: Convert to fraction form
    399,187.36/598,559.51 = 132,802.46/x
  3. Step 3: Cross multiply
    399,187.36x = 598,559.51 × 132,802.46
  4. Step 4: Simplify right side
    399,187.36x = 79,490,174,720.38
  5. Step 5: Solve for x
    x = 79,490,174,720.38/399,187.36
  6. Step 6: Final answer
    x = 199,129.99

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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.