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Finding the Fourth Proportional to 217,798.12, 300,333.54 and 172,403.56

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Solution

The fourth proportional to 217,798.12, 300,333.54 and 172,403.56 is: 237,736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,798.12 : 300,333.54 = 172,403.56 : x
  2. Step 2: Convert to fraction form
    217,798.12/300,333.54 = 172,403.56/x
  3. Step 3: Cross multiply
    217,798.12x = 300,333.54 × 172,403.56
  4. Step 4: Simplify right side
    217,798.12x = 51,778,571,483.40
  5. Step 5: Solve for x
    x = 51,778,571,483.40/217,798.12
  6. Step 6: Final answer
    x = 237,736.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.