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Finding the Fourth Proportional to 283,099.38, 390,665.43 and 154,038.38

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Solution

The fourth proportional to 283,099.38, 390,665.43 and 154,038.38 is: 212,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,099.38 : 390,665.43 = 154,038.38 : x
  2. Step 2: Convert to fraction form
    283,099.38/390,665.43 = 154,038.38/x
  3. Step 3: Cross multiply
    283,099.38x = 390,665.43 × 154,038.38
  4. Step 4: Simplify right side
    283,099.38x = 60,177,471,302.12
  5. Step 5: Solve for x
    x = 60,177,471,302.12/283,099.38
  6. Step 6: Final answer
    x = 212,566.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.