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Finding the Fourth Proportional to 290,714.70, 436,072.05 and 273,204.30

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Solution

The fourth proportional to 290,714.70, 436,072.05 and 273,204.30 is: 409,806.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,714.70 : 436,072.05 = 273,204.30 : x
  2. Step 2: Convert to fraction form
    290,714.70/436,072.05 = 273,204.30/x
  3. Step 3: Cross multiply
    290,714.70x = 436,072.05 × 273,204.30
  4. Step 4: Simplify right side
    290,714.70x = 119,136,759,169.82
  5. Step 5: Solve for x
    x = 119,136,759,169.82/290,714.70
  6. Step 6: Final answer
    x = 409,806.45

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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.