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Finding the Fourth Proportional to 326,115.16, 489,014.74 and 191,216.12

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Solution

The fourth proportional to 326,115.16, 489,014.74 and 191,216.12 is: 286,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,115.16 : 489,014.74 = 191,216.12 : x
  2. Step 2: Convert to fraction form
    326,115.16/489,014.74 = 191,216.12/x
  3. Step 3: Cross multiply
    326,115.16x = 489,014.74 × 191,216.12
  4. Step 4: Simplify right side
    326,115.16x = 93,507,501,205.61
  5. Step 5: Solve for x
    x = 93,507,501,205.61/326,115.16
  6. Step 6: Final answer
    x = 286,731.54

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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.