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Finding the Fourth Proportional to 573,363.20, 859,785.60 and 257,657.60

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Solution

The fourth proportional to 573,363.20, 859,785.60 and 257,657.60 is: 386,369.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,363.20 : 859,785.60 = 257,657.60 : x
  2. Step 2: Convert to fraction form
    573,363.20/859,785.60 = 257,657.60/x
  3. Step 3: Cross multiply
    573,363.20x = 859,785.60 × 257,657.60
  4. Step 4: Simplify right side
    573,363.20x = 221,530,294,210.56
  5. Step 5: Solve for x
    x = 221,530,294,210.56/573,363.20
  6. Step 6: Final answer
    x = 386,369.92

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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.