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Finding the Fourth Proportional to 421,190.52, 581,630.94 and 270,549.96

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Solution

The fourth proportional to 421,190.52, 581,630.94 and 270,549.96 is: 373,608.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,190.52 : 581,630.94 = 270,549.96 : x
  2. Step 2: Convert to fraction form
    421,190.52/581,630.94 = 270,549.96/x
  3. Step 3: Cross multiply
    421,190.52x = 581,630.94 × 270,549.96
  4. Step 4: Simplify right side
    421,190.52x = 157,360,227,551.76
  5. Step 5: Solve for x
    x = 157,360,227,551.76/421,190.52
  6. Step 6: Final answer
    x = 373,608.19

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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.