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Finding the Fourth Proportional to 215,420.60, 323,145.30 and 73,263.80

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Solution

The fourth proportional to 215,420.60, 323,145.30 and 73,263.80 is: 109,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,420.60 : 323,145.30 = 73,263.80 : x
  2. Step 2: Convert to fraction form
    215,420.60/323,145.30 = 73,263.80/x
  3. Step 3: Cross multiply
    215,420.60x = 323,145.30 × 73,263.80
  4. Step 4: Simplify right side
    215,420.60x = 23,674,852,630.14
  5. Step 5: Solve for x
    x = 23,674,852,630.14/215,420.60
  6. Step 6: Final answer
    x = 109,900.60

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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.