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Finding the Fourth Proportional to 399,841.87, 599,867.96 and 143,700.32

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Solution

The fourth proportional to 399,841.87, 599,867.96 and 143,700.32 is: 215,588.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,841.87 : 599,867.96 = 143,700.32 : x
  2. Step 2: Convert to fraction form
    399,841.87/599,867.96 = 143,700.32/x
  3. Step 3: Cross multiply
    399,841.87x = 599,867.96 × 143,700.32
  4. Step 4: Simplify right side
    399,841.87x = 86,201,217,809.75
  5. Step 5: Solve for x
    x = 86,201,217,809.75/399,841.87
  6. Step 6: Final answer
    x = 215,588.27

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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.