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Finding the Fourth Proportional to 573,128.73, 859,804.07 and 218,115.45

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Solution

The fourth proportional to 573,128.73, 859,804.07 and 218,115.45 is: 327,215.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,128.73 : 859,804.07 = 218,115.45 : x
  2. Step 2: Convert to fraction form
    573,128.73/859,804.07 = 218,115.45/x
  3. Step 3: Cross multiply
    573,128.73x = 859,804.07 × 218,115.45
  4. Step 4: Simplify right side
    573,128.73x = 187,536,550,549.30
  5. Step 5: Solve for x
    x = 187,536,550,549.30/573,128.73
  6. Step 6: Final answer
    x = 327,215.41

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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.