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Finding the Fourth Proportional to 489,690.90, 734,519.21 and 201,492.14

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Solution

The fourth proportional to 489,690.90, 734,519.21 and 201,492.14 is: 302,231.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,690.90 : 734,519.21 = 201,492.14 : x
  2. Step 2: Convert to fraction form
    489,690.90/734,519.21 = 201,492.14/x
  3. Step 3: Cross multiply
    489,690.90x = 734,519.21 × 201,492.14
  4. Step 4: Simplify right side
    489,690.90x = 147,999,842,813.95
  5. Step 5: Solve for x
    x = 147,999,842,813.95/489,690.90
  6. Step 6: Final answer
    x = 302,231.15

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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.