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Finding the Fourth Proportional to 163,978.80, 245,579.40 and 163,978.80

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Solution

The fourth proportional to 163,978.80, 245,579.40 and 163,978.80 is: 245,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,978.80 : 245,579.40 = 163,978.80 : x
  2. Step 2: Convert to fraction form
    163,978.80/245,579.40 = 163,978.80/x
  3. Step 3: Cross multiply
    163,978.80x = 245,579.40 × 163,978.80
  4. Step 4: Simplify right side
    163,978.80x = 40,269,815,316.72
  5. Step 5: Solve for x
    x = 40,269,815,316.72/163,978.80
  6. Step 6: Final answer
    x = 245,579.40

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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.