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Finding the Fourth Proportional to 300,384.96, 450,079.88 and 211,202.76

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Solution

The fourth proportional to 300,384.96, 450,079.88 and 211,202.76 is: 316,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,384.96 : 450,079.88 = 211,202.76 : x
  2. Step 2: Convert to fraction form
    300,384.96/450,079.88 = 211,202.76/x
  3. Step 3: Cross multiply
    300,384.96x = 450,079.88 × 211,202.76
  4. Step 4: Simplify right side
    300,384.96x = 95,058,112,876.47
  5. Step 5: Solve for x
    x = 95,058,112,876.47/300,384.96
  6. Step 6: Final answer
    x = 316,454.30

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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.