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Finding the Fourth Proportional to 399,015.72, 598,300.02 and 162,081

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Solution

The fourth proportional to 399,015.72, 598,300.02 and 162,081 is: 243,030.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,015.72 : 598,300.02 = 162,081 : x
  2. Step 2: Convert to fraction form
    399,015.72/598,300.02 = 162,081/x
  3. Step 3: Cross multiply
    399,015.72x = 598,300.02 × 162,081
  4. Step 4: Simplify right side
    399,015.72x = 96,973,065,541.62
  5. Step 5: Solve for x
    x = 96,973,065,541.62/399,015.72
  6. Step 6: Final answer
    x = 243,030.69

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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.