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Finding the Fourth Proportional to 421,231.52, 581,689.68 and 270,593.12

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Solution

The fourth proportional to 421,231.52, 581,689.68 and 270,593.12 is: 373,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,231.52 : 581,689.68 = 270,593.12 : x
  2. Step 2: Convert to fraction form
    421,231.52/581,689.68 = 270,593.12/x
  3. Step 3: Cross multiply
    421,231.52x = 581,689.68 × 270,593.12
  4. Step 4: Simplify right side
    421,231.52x = 157,401,225,383.00
  5. Step 5: Solve for x
    x = 157,401,225,383.00/421,231.52
  6. Step 6: Final answer
    x = 373,669.15

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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.