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Finding the Fourth Proportional to 399,860.88, 599,828.88 and 147,146.19

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Solution

The fourth proportional to 399,860.88, 599,828.88 and 147,146.19 is: 220,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,860.88 : 599,828.88 = 147,146.19 : x
  2. Step 2: Convert to fraction form
    399,860.88/599,828.88 = 147,146.19/x
  3. Step 3: Cross multiply
    399,860.88x = 599,828.88 × 147,146.19
  4. Step 4: Simplify right side
    399,860.88x = 88,262,534,343.97
  5. Step 5: Solve for x
    x = 88,262,534,343.97/399,860.88
  6. Step 6: Final answer
    x = 220,733.11

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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.