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Finding the Fourth Proportional to 408,124.20, 612,186.30 and 242,236.20

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Solution

The fourth proportional to 408,124.20, 612,186.30 and 242,236.20 is: 363,354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,124.20 : 612,186.30 = 242,236.20 : x
  2. Step 2: Convert to fraction form
    408,124.20/612,186.30 = 242,236.20/x
  3. Step 3: Cross multiply
    408,124.20x = 612,186.30 × 242,236.20
  4. Step 4: Simplify right side
    408,124.20x = 148,293,683,004.06
  5. Step 5: Solve for x
    x = 148,293,683,004.06/408,124.20
  6. Step 6: Final answer
    x = 363,354.30

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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.