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Finding the Fourth Proportional to 491,346.40, 737,019.60 and 158,922.40

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Solution

The fourth proportional to 491,346.40, 737,019.60 and 158,922.40 is: 238,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,346.40 : 737,019.60 = 158,922.40 : x
  2. Step 2: Convert to fraction form
    491,346.40/737,019.60 = 158,922.40/x
  3. Step 3: Cross multiply
    491,346.40x = 737,019.60 × 158,922.40
  4. Step 4: Simplify right side
    491,346.40x = 117,128,923,679.04
  5. Step 5: Solve for x
    x = 117,128,923,679.04/491,346.40
  6. Step 6: Final answer
    x = 238,383.60

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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.