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Finding the Fourth Proportional to 326,431.72, 489,094.62 and 260,076.52

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Solution

The fourth proportional to 326,431.72, 489,094.62 and 260,076.52 is: 389,674.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,431.72 : 489,094.62 = 260,076.52 : x
  2. Step 2: Convert to fraction form
    326,431.72/489,094.62 = 260,076.52/x
  3. Step 3: Cross multiply
    326,431.72x = 489,094.62 × 260,076.52
  4. Step 4: Simplify right side
    326,431.72x = 127,202,026,720.32
  5. Step 5: Solve for x
    x = 127,202,026,720.32/326,431.72
  6. Step 6: Final answer
    x = 389,674.22

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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.