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Finding the Fourth Proportional to 452,500.40, 678,898.22 and 215,812.32

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Solution

The fourth proportional to 452,500.40, 678,898.22 and 215,812.32 is: 323,788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,500.40 : 678,898.22 = 215,812.32 : x
  2. Step 2: Convert to fraction form
    452,500.40/678,898.22 = 215,812.32/x
  3. Step 3: Cross multiply
    452,500.40x = 678,898.22 × 215,812.32
  4. Step 4: Simplify right side
    452,500.40x = 146,514,599,902.07
  5. Step 5: Solve for x
    x = 146,514,599,902.07/452,500.40
  6. Step 6: Final answer
    x = 323,788.88

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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.