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Finding the Fourth Proportional to 438,626.70, 657,940.05 and 252,002.70

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Solution

The fourth proportional to 438,626.70, 657,940.05 and 252,002.70 is: 378,004.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,626.70 : 657,940.05 = 252,002.70 : x
  2. Step 2: Convert to fraction form
    438,626.70/657,940.05 = 252,002.70/x
  3. Step 3: Cross multiply
    438,626.70x = 657,940.05 × 252,002.70
  4. Step 4: Simplify right side
    438,626.70x = 165,802,669,038.14
  5. Step 5: Solve for x
    x = 165,802,669,038.14/438,626.70
  6. Step 6: Final answer
    x = 378,004.05

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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.