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Finding the Fourth Proportional to 439,603.60, 659,405.40 and 159,084.40

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Solution

The fourth proportional to 439,603.60, 659,405.40 and 159,084.40 is: 238,626.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,603.60 : 659,405.40 = 159,084.40 : x
  2. Step 2: Convert to fraction form
    439,603.60/659,405.40 = 159,084.40/x
  3. Step 3: Cross multiply
    439,603.60x = 659,405.40 × 159,084.40
  4. Step 4: Simplify right side
    439,603.60x = 104,901,112,415.76
  5. Step 5: Solve for x
    x = 104,901,112,415.76/439,603.60
  6. Step 6: Final answer
    x = 238,626.60

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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.