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Finding the Fourth Proportional to 326,324.84, 489,428.84 and 207,643.64

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Solution

The fourth proportional to 326,324.84, 489,428.84 and 207,643.64 is: 311,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,324.84 : 489,428.84 = 207,643.64 : x
  2. Step 2: Convert to fraction form
    326,324.84/489,428.84 = 207,643.64/x
  3. Step 3: Cross multiply
    326,324.84x = 489,428.84 × 207,643.64
  4. Step 4: Simplify right side
    326,324.84x = 101,626,785,858.58
  5. Step 5: Solve for x
    x = 101,626,785,858.58/326,324.84
  6. Step 6: Final answer
    x = 311,428.29

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1.5x scale

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.