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Finding the Fourth Proportional to 164,967.20, 247,450.80 and 145,940.30

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Solution

The fourth proportional to 164,967.20, 247,450.80 and 145,940.30 is: 218,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,967.20 : 247,450.80 = 145,940.30 : x
  2. Step 2: Convert to fraction form
    164,967.20/247,450.80 = 145,940.30/x
  3. Step 3: Cross multiply
    164,967.20x = 247,450.80 × 145,940.30
  4. Step 4: Simplify right side
    164,967.20x = 36,113,043,987.24
  5. Step 5: Solve for x
    x = 36,113,043,987.24/164,967.20
  6. Step 6: Final answer
    x = 218,910.45

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1.5x scale

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.