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Finding the Fourth Proportional to 199,430.81, 299,148.83 and 66,311.07

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Solution

The fourth proportional to 199,430.81, 299,148.83 and 66,311.07 is: 99,467.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,430.81 : 299,148.83 = 66,311.07 : x
  2. Step 2: Convert to fraction form
    199,430.81/299,148.83 = 66,311.07/x
  3. Step 3: Cross multiply
    199,430.81x = 299,148.83 × 66,311.07
  4. Step 4: Simplify right side
    199,430.81x = 19,836,877,553.18
  5. Step 5: Solve for x
    x = 19,836,877,553.18/199,430.81
  6. Step 6: Final answer
    x = 99,467.47

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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.