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Finding the Fourth Proportional to 489,930.57, 734,609.85 and 190,060.77

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Solution

The fourth proportional to 489,930.57, 734,609.85 and 190,060.77 is: 284,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,930.57 : 734,609.85 = 190,060.77 : x
  2. Step 2: Convert to fraction form
    489,930.57/734,609.85 = 190,060.77/x
  3. Step 3: Cross multiply
    489,930.57x = 734,609.85 × 190,060.77
  4. Step 4: Simplify right side
    489,930.57x = 139,620,513,740.58
  5. Step 5: Solve for x
    x = 139,620,513,740.58/489,930.57
  6. Step 6: Final answer
    x = 284,980.20

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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.