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Finding the Fourth Proportional to 347,406.29, 521,151.47 and 122,720.75

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Solution

The fourth proportional to 347,406.29, 521,151.47 and 122,720.75 is: 184,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,406.29 : 521,151.47 = 122,720.75 : x
  2. Step 2: Convert to fraction form
    347,406.29/521,151.47 = 122,720.75/x
  3. Step 3: Cross multiply
    347,406.29x = 521,151.47 × 122,720.75
  4. Step 4: Simplify right side
    347,406.29x = 63,956,100,871.68
  5. Step 5: Solve for x
    x = 63,956,100,871.68/347,406.29
  6. Step 6: Final answer
    x = 184,095.98

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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.