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Finding the Fourth Proportional to 228,000.30, 342,000.45 and 186,009.90

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Solution

The fourth proportional to 228,000.30, 342,000.45 and 186,009.90 is: 279,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,000.30 : 342,000.45 = 186,009.90 : x
  2. Step 2: Convert to fraction form
    228,000.30/342,000.45 = 186,009.90/x
  3. Step 3: Cross multiply
    228,000.30x = 342,000.45 × 186,009.90
  4. Step 4: Simplify right side
    228,000.30x = 63,615,469,504.46
  5. Step 5: Solve for x
    x = 63,615,469,504.46/228,000.30
  6. Step 6: Final answer
    x = 279,014.85

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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.