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Finding the Fourth Proportional to 573,279.20, 859,659.60 and 257,573.60

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Solution

The fourth proportional to 573,279.20, 859,659.60 and 257,573.60 is: 386,243.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,279.20 : 859,659.60 = 257,573.60 : x
  2. Step 2: Convert to fraction form
    573,279.20/859,659.60 = 257,573.60/x
  3. Step 3: Cross multiply
    573,279.20x = 859,659.60 × 257,573.60
  4. Step 4: Simplify right side
    573,279.20x = 221,425,617,946.56
  5. Step 5: Solve for x
    x = 221,425,617,946.56/573,279.20
  6. Step 6: Final answer
    x = 386,243.94

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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.