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Finding the Fourth Proportional to 326,259.78, 450,203.31 and 188,430.18

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Solution

The fourth proportional to 326,259.78, 450,203.31 and 188,430.18 is: 260,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,259.78 : 450,203.31 = 188,430.18 : x
  2. Step 2: Convert to fraction form
    326,259.78/450,203.31 = 188,430.18/x
  3. Step 3: Cross multiply
    326,259.78x = 450,203.31 × 188,430.18
  4. Step 4: Simplify right side
    326,259.78x = 84,831,890,739.90
  5. Step 5: Solve for x
    x = 84,831,890,739.90/326,259.78
  6. Step 6: Final answer
    x = 260,013.33

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1.5x scale

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.