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Finding the Fourth Proportional to 489,920.58, 734,594.85 and 190,050.76

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Solution

The fourth proportional to 489,920.58, 734,594.85 and 190,050.76 is: 284,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,920.58 : 734,594.85 = 190,050.76 : x
  2. Step 2: Convert to fraction form
    489,920.58/734,594.85 = 190,050.76/x
  3. Step 3: Cross multiply
    489,920.58x = 734,594.85 × 190,050.76
  4. Step 4: Simplify right side
    489,920.58x = 139,610,304,911.36
  5. Step 5: Solve for x
    x = 139,610,304,911.36/489,920.58
  6. Step 6: Final answer
    x = 284,965.18

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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.