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Finding the Fourth Proportional to 326,505.32, 450,428.82 and 218,963.24

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Solution

The fourth proportional to 326,505.32, 450,428.82 and 218,963.24 is: 302,069.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,505.32 : 450,428.82 = 218,963.24 : x
  2. Step 2: Convert to fraction form
    326,505.32/450,428.82 = 218,963.24/x
  3. Step 3: Cross multiply
    326,505.32x = 450,428.82 × 218,963.24
  4. Step 4: Simplify right side
    326,505.32x = 98,627,353,816.58
  5. Step 5: Solve for x
    x = 98,627,353,816.58/326,505.32
  6. Step 6: Final answer
    x = 302,069.67

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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.