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Finding the Fourth Proportional to 530,216.73, 731,695.73 and 288,500.27

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Solution

The fourth proportional to 530,216.73, 731,695.73 and 288,500.27 is: 398,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,216.73 : 731,695.73 = 288,500.27 : x
  2. Step 2: Convert to fraction form
    530,216.73/731,695.73 = 288,500.27/x
  3. Step 3: Cross multiply
    530,216.73x = 731,695.73 × 288,500.27
  4. Step 4: Simplify right side
    530,216.73x = 211,094,410,561.87
  5. Step 5: Solve for x
    x = 211,094,410,561.87/530,216.73
  6. Step 6: Final answer
    x = 398,128.54

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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.