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Finding the Fourth Proportional to 290,074.76, 400,302.78 and 162,762.20

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Solution

The fourth proportional to 290,074.76, 400,302.78 and 162,762.20 is: 224,611.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,074.76 : 400,302.78 = 162,762.20 : x
  2. Step 2: Convert to fraction form
    290,074.76/400,302.78 = 162,762.20/x
  3. Step 3: Cross multiply
    290,074.76x = 400,302.78 × 162,762.20
  4. Step 4: Simplify right side
    290,074.76x = 65,154,161,138.92
  5. Step 5: Solve for x
    x = 65,154,161,138.92/290,074.76
  6. Step 6: Final answer
    x = 224,611.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.