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Finding the Fourth Proportional to 290,472.34, 436,081.65 and 223,954.72

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Solution

The fourth proportional to 290,472.34, 436,081.65 and 223,954.72 is: 336,219.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,472.34 : 436,081.65 = 223,954.72 : x
  2. Step 2: Convert to fraction form
    290,472.34/436,081.65 = 223,954.72/x
  3. Step 3: Cross multiply
    290,472.34x = 436,081.65 × 223,954.72
  4. Step 4: Simplify right side
    290,472.34x = 97,662,543,822.89
  5. Step 5: Solve for x
    x = 97,662,543,822.89/290,472.34
  6. Step 6: Final answer
    x = 336,219.77

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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.