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Finding the Fourth Proportional to 320,401.60, 479,946.30 and 162,718.90

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Solution

The fourth proportional to 320,401.60, 479,946.30 and 162,718.90 is: 243,745.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,401.60 : 479,946.30 = 162,718.90 : x
  2. Step 2: Convert to fraction form
    320,401.60/479,946.30 = 162,718.90/x
  3. Step 3: Cross multiply
    320,401.60x = 479,946.30 × 162,718.90
  4. Step 4: Simplify right side
    320,401.60x = 78,096,333,995.07
  5. Step 5: Solve for x
    x = 78,096,333,995.07/320,401.60
  6. Step 6: Final answer
    x = 243,745.14

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1.5x scale

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.