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Finding the Fourth Proportional to 283,374.39, 390,391.51 and 197,185.16

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Solution

The fourth proportional to 283,374.39, 390,391.51 and 197,185.16 is: 271,652.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,374.39 : 390,391.51 = 197,185.16 : x
  2. Step 2: Convert to fraction form
    283,374.39/390,391.51 = 197,185.16/x
  3. Step 3: Cross multiply
    283,374.39x = 390,391.51 × 197,185.16
  4. Step 4: Simplify right side
    283,374.39x = 76,979,409,917.07
  5. Step 5: Solve for x
    x = 76,979,409,917.07/283,374.39
  6. Step 6: Final answer
    x = 271,652.67

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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.