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Finding the Fourth Proportional to 405,618, 608,427.12 and 110,130

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Solution

The fourth proportional to 405,618, 608,427.12 and 110,130 is: 165,195.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,618 : 608,427.12 = 110,130 : x
  2. Step 2: Convert to fraction form
    405,618/608,427.12 = 110,130/x
  3. Step 3: Cross multiply
    405,618x = 608,427.12 × 110,130
  4. Step 4: Simplify right side
    405,618x = 67,006,078,725.60
  5. Step 5: Solve for x
    x = 67,006,078,725.60/405,618
  6. Step 6: Final answer
    x = 165,195.03

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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.