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Finding the Fourth Proportional to 290,784.98, 401,223.90 and 169,902.91

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Solution

The fourth proportional to 290,784.98, 401,223.90 and 169,902.91 is: 234,431.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,784.98 : 401,223.90 = 169,902.91 : x
  2. Step 2: Convert to fraction form
    290,784.98/401,223.90 = 169,902.91/x
  3. Step 3: Cross multiply
    290,784.98x = 401,223.90 × 169,902.91
  4. Step 4: Simplify right side
    290,784.98x = 68,169,107,168.49
  5. Step 5: Solve for x
    x = 68,169,107,168.49/290,784.98
  6. Step 6: Final answer
    x = 234,431.32

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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.