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Finding the Fourth Proportional to 405,336.40, 608,004.60 and 109,848.40

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Solution

The fourth proportional to 405,336.40, 608,004.60 and 109,848.40 is: 164,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,336.40 : 608,004.60 = 109,848.40 : x
  2. Step 2: Convert to fraction form
    405,336.40/608,004.60 = 109,848.40/x
  3. Step 3: Cross multiply
    405,336.40x = 608,004.60 × 109,848.40
  4. Step 4: Simplify right side
    405,336.40x = 66,788,332,502.64
  5. Step 5: Solve for x
    x = 66,788,332,502.64/405,336.40
  6. Step 6: Final answer
    x = 164,772.60

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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.