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Finding the Fourth Proportional to 399,618.60, 598,903.02 and 189,316.68

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Solution

The fourth proportional to 399,618.60, 598,903.02 and 189,316.68 is: 283,726.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,618.60 : 598,903.02 = 189,316.68 : x
  2. Step 2: Convert to fraction form
    399,618.60/598,903.02 = 189,316.68/x
  3. Step 3: Cross multiply
    399,618.60x = 598,903.02 × 189,316.68
  4. Step 4: Simplify right side
    399,618.60x = 113,382,330,441.79
  5. Step 5: Solve for x
    x = 113,382,330,441.79/399,618.60
  6. Step 6: Final answer
    x = 283,726.36

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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.