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Finding the Fourth Proportional to 320,059.11, 480,389.99 and 162,400.71

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Solution

The fourth proportional to 320,059.11, 480,389.99 and 162,400.71 is: 243,753.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,059.11 : 480,389.99 = 162,400.71 : x
  2. Step 2: Convert to fraction form
    320,059.11/480,389.99 = 162,400.71/x
  3. Step 3: Cross multiply
    320,059.11x = 480,389.99 × 162,400.71
  4. Step 4: Simplify right side
    320,059.11x = 78,015,674,640.89
  5. Step 5: Solve for x
    x = 78,015,674,640.89/320,059.11
  6. Step 6: Final answer
    x = 243,753.96

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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.