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Finding the Fourth Proportional to 421,557.90, 581,763.82 and 230,571.30

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Solution

The fourth proportional to 421,557.90, 581,763.82 and 230,571.30 is: 318,196.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,557.90 : 581,763.82 = 230,571.30 : x
  2. Step 2: Convert to fraction form
    421,557.90/581,763.82 = 230,571.30/x
  3. Step 3: Cross multiply
    421,557.90x = 581,763.82 × 230,571.30
  4. Step 4: Simplify right side
    421,557.90x = 134,138,040,270.37
  5. Step 5: Solve for x
    x = 134,138,040,270.37/421,557.90
  6. Step 6: Final answer
    x = 318,196.01

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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.