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Finding the Fourth Proportional to 290,808.23, 436,281.93 and 140,873.24

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Solution

The fourth proportional to 290,808.23, 436,281.93 and 140,873.24 is: 211,343.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,808.23 : 436,281.93 = 140,873.24 : x
  2. Step 2: Convert to fraction form
    290,808.23/436,281.93 = 140,873.24/x
  3. Step 3: Cross multiply
    290,808.23x = 436,281.93 × 140,873.24
  4. Step 4: Simplify right side
    290,808.23x = 61,460,450,123.26
  5. Step 5: Solve for x
    x = 61,460,450,123.26/290,808.23
  6. Step 6: Final answer
    x = 211,343.58

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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.