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Finding the Fourth Proportional to 453,166.80, 678,972.60 and 215,998.80

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Solution

The fourth proportional to 453,166.80, 678,972.60 and 215,998.80 is: 323,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,166.80 : 678,972.60 = 215,998.80 : x
  2. Step 2: Convert to fraction form
    453,166.80/678,972.60 = 215,998.80/x
  3. Step 3: Cross multiply
    453,166.80x = 678,972.60 × 215,998.80
  4. Step 4: Simplify right side
    453,166.80x = 146,657,266,832.88
  5. Step 5: Solve for x
    x = 146,657,266,832.88/453,166.80
  6. Step 6: Final answer
    x = 323,627.56

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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.