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Finding the Fourth Proportional to 489,875.94, 734,860.38 and 190,379.66

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Solution

The fourth proportional to 489,875.94, 734,860.38 and 190,379.66 is: 285,587.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,875.94 : 734,860.38 = 190,379.66 : x
  2. Step 2: Convert to fraction form
    489,875.94/734,860.38 = 190,379.66/x
  3. Step 3: Cross multiply
    489,875.94x = 734,860.38 × 190,379.66
  4. Step 4: Simplify right side
    489,875.94x = 139,902,465,617.57
  5. Step 5: Solve for x
    x = 139,902,465,617.57/489,875.94
  6. Step 6: Final answer
    x = 285,587.54

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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.