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Finding the Fourth Proportional to 326,054.40, 489,227.40 and 157,509.60

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Solution

The fourth proportional to 326,054.40, 489,227.40 and 157,509.60 is: 236,334.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,054.40 : 489,227.40 = 157,509.60 : x
  2. Step 2: Convert to fraction form
    326,054.40/489,227.40 = 157,509.60/x
  3. Step 3: Cross multiply
    326,054.40x = 489,227.40 × 157,509.60
  4. Step 4: Simplify right side
    326,054.40x = 77,058,012,083.04
  5. Step 5: Solve for x
    x = 77,058,012,083.04/326,054.40
  6. Step 6: Final answer
    x = 236,334.83

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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.