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Finding the Fourth Proportional to 347,653.78, 521,524.41 and 122,961.40

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Solution

The fourth proportional to 347,653.78, 521,524.41 and 122,961.40 is: 184,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,653.78 : 521,524.41 = 122,961.40 : x
  2. Step 2: Convert to fraction form
    347,653.78/521,524.41 = 122,961.40/x
  3. Step 3: Cross multiply
    347,653.78x = 521,524.41 × 122,961.40
  4. Step 4: Simplify right side
    347,653.78x = 64,127,371,587.77
  5. Step 5: Solve for x
    x = 64,127,371,587.77/347,653.78
  6. Step 6: Final answer
    x = 184,457.57

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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.