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Finding the Fourth Proportional to 405,928.60, 608,931.30 and 110,440.60

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Solution

The fourth proportional to 405,928.60, 608,931.30 and 110,440.60 is: 165,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,928.60 : 608,931.30 = 110,440.60 : x
  2. Step 2: Convert to fraction form
    405,928.60/608,931.30 = 110,440.60/x
  3. Step 3: Cross multiply
    405,928.60x = 608,931.30 × 110,440.60
  4. Step 4: Simplify right side
    405,928.60x = 67,250,738,130.78
  5. Step 5: Solve for x
    x = 67,250,738,130.78/405,928.60
  6. Step 6: Final answer
    x = 165,671.35

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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.