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Finding the Fourth Proportional to 436,955.99, 655,469.55 and 121,412.93

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Solution

The fourth proportional to 436,955.99, 655,469.55 and 121,412.93 is: 182,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,955.99 : 655,469.55 = 121,412.93 : x
  2. Step 2: Convert to fraction form
    436,955.99/655,469.55 = 121,412.93/x
  3. Step 3: Cross multiply
    436,955.99x = 655,469.55 × 121,412.93
  4. Step 4: Simplify right side
    436,955.99x = 79,582,475,313.93
  5. Step 5: Solve for x
    x = 79,582,475,313.93/436,955.99
  6. Step 6: Final answer
    x = 182,129.27

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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.