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Finding the Fourth Proportional to 283,164.83, 390,763.41 and 155,840.42

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Solution

The fourth proportional to 283,164.83, 390,763.41 and 155,840.42 is: 215,057.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,164.83 : 390,763.41 = 155,840.42 : x
  2. Step 2: Convert to fraction form
    283,164.83/390,763.41 = 155,840.42/x
  3. Step 3: Cross multiply
    283,164.83x = 390,763.41 × 155,840.42
  4. Step 4: Simplify right side
    283,164.83x = 60,896,731,981.22
  5. Step 5: Solve for x
    x = 60,896,731,981.22/283,164.83
  6. Step 6: Final answer
    x = 215,057.54

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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.