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Finding the Fourth Proportional to 522,846.90, 721,683.27 and 308,056.37

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Solution

The fourth proportional to 522,846.90, 721,683.27 and 308,056.37 is: 425,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,846.90 : 721,683.27 = 308,056.37 : x
  2. Step 2: Convert to fraction form
    522,846.90/721,683.27 = 308,056.37/x
  3. Step 3: Cross multiply
    522,846.90x = 721,683.27 × 308,056.37
  4. Step 4: Simplify right side
    522,846.90x = 222,319,124,837.51
  5. Step 5: Solve for x
    x = 222,319,124,837.51/522,846.90
  6. Step 6: Final answer
    x = 425,208.84

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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.