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Finding the Fourth Proportional to 388,758.45, 583,146.89 and 104,449.35

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Solution

The fourth proportional to 388,758.45, 583,146.89 and 104,449.35 is: 156,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,758.45 : 583,146.89 = 104,449.35 : x
  2. Step 2: Convert to fraction form
    388,758.45/583,146.89 = 104,449.35/x
  3. Step 3: Cross multiply
    388,758.45x = 583,146.89 × 104,449.35
  4. Step 4: Simplify right side
    388,758.45x = 60,909,313,615.02
  5. Step 5: Solve for x
    x = 60,909,313,615.02/388,758.45
  6. Step 6: Final answer
    x = 156,676.50

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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.