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Finding the Fourth Proportional to 218,140.10, 305,603.50 and 218,140.10

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Solution

The fourth proportional to 218,140.10, 305,603.50 and 218,140.10 is: 305,603.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,140.10 : 305,603.50 = 218,140.10 : x
  2. Step 2: Convert to fraction form
    218,140.10/305,603.50 = 218,140.10/x
  3. Step 3: Cross multiply
    218,140.10x = 305,603.50 × 218,140.10
  4. Step 4: Simplify right side
    218,140.10x = 66,664,378,050.35
  5. Step 5: Solve for x
    x = 66,664,378,050.35/218,140.10
  6. Step 6: Final answer
    x = 305,603.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.