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Finding the Fourth Proportional to 326,015.98, 489,140.32 and 198,192.32

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Solution

The fourth proportional to 326,015.98, 489,140.32 and 198,192.32 is: 297,359.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,015.98 : 489,140.32 = 198,192.32 : x
  2. Step 2: Convert to fraction form
    326,015.98/489,140.32 = 198,192.32/x
  3. Step 3: Cross multiply
    326,015.98x = 489,140.32 × 198,192.32
  4. Step 4: Simplify right side
    326,015.98x = 96,943,854,826.34
  5. Step 5: Solve for x
    x = 96,943,854,826.34/326,015.98
  6. Step 6: Final answer
    x = 297,359.21

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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.