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Finding the Fourth Proportional to 290,554.34, 400,038.09 and 247,941.86

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Solution

The fourth proportional to 290,554.34, 400,038.09 and 247,941.86 is: 341,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,554.34 : 400,038.09 = 247,941.86 : x
  2. Step 2: Convert to fraction form
    290,554.34/400,038.09 = 247,941.86/x
  3. Step 3: Cross multiply
    290,554.34x = 400,038.09 × 247,941.86
  4. Step 4: Simplify right side
    290,554.34x = 99,186,188,105.45
  5. Step 5: Solve for x
    x = 99,186,188,105.45/290,554.34
  6. Step 6: Final answer
    x = 341,368.81

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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.