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Finding the Fourth Proportional to 290,178.64, 400,485.63 and 162,861.22

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Solution

The fourth proportional to 290,178.64, 400,485.63 and 162,861.22 is: 224,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,178.64 : 400,485.63 = 162,861.22 : x
  2. Step 2: Convert to fraction form
    290,178.64/400,485.63 = 162,861.22/x
  3. Step 3: Cross multiply
    290,178.64x = 400,485.63 × 162,861.22
  4. Step 4: Simplify right side
    290,178.64x = 65,223,578,294.27
  5. Step 5: Solve for x
    x = 65,223,578,294.27/290,178.64
  6. Step 6: Final answer
    x = 224,770.43

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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.