Home / 489,540.40-734,578.20-190,032.88

Finding the Fourth Proportional to 489,540.40, 734,578.20 and 190,032.88

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Solution

The fourth proportional to 489,540.40, 734,578.20 and 190,032.88 is: 285,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,540.40 : 734,578.20 = 190,032.88 : x
  2. Step 2: Convert to fraction form
    489,540.40/734,578.20 = 190,032.88/x
  3. Step 3: Cross multiply
    489,540.40x = 734,578.20 × 190,032.88
  4. Step 4: Simplify right side
    489,540.40x = 139,594,010,931.22
  5. Step 5: Solve for x
    x = 139,594,010,931.22/489,540.40
  6. Step 6: Final answer
    x = 285,153.20

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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.