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Finding the Fourth Proportional to 283,103.01, 390,678.87 and 154,045.29

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Solution

The fourth proportional to 283,103.01, 390,678.87 and 154,045.29 is: 212,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,103.01 : 390,678.87 = 154,045.29 : x
  2. Step 2: Convert to fraction form
    283,103.01/390,678.87 = 154,045.29/x
  3. Step 3: Cross multiply
    283,103.01x = 390,678.87 × 154,045.29
  4. Step 4: Simplify right side
    283,103.01x = 60,182,239,826.02
  5. Step 5: Solve for x
    x = 60,182,239,826.02/283,103.01
  6. Step 6: Final answer
    x = 212,580.71

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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.