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Finding the Fourth Proportional to 430,080.70, 644,902.35 and 252,642.10

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Solution

The fourth proportional to 430,080.70, 644,902.35 and 252,642.10 is: 378,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,080.70 : 644,902.35 = 252,642.10 : x
  2. Step 2: Convert to fraction form
    430,080.70/644,902.35 = 252,642.10/x
  3. Step 3: Cross multiply
    430,080.70x = 644,902.35 × 252,642.10
  4. Step 4: Simplify right side
    430,080.70x = 162,929,483,998.94
  5. Step 5: Solve for x
    x = 162,929,483,998.94/430,080.70
  6. Step 6: Final answer
    x = 378,834.68

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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.