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Finding the Fourth Proportional to 326,990.50, 489,773.76 and 158,154.71

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Solution

The fourth proportional to 326,990.50, 489,773.76 and 158,154.71 is: 236,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,990.50 : 489,773.76 = 158,154.71 : x
  2. Step 2: Convert to fraction form
    326,990.50/489,773.76 = 158,154.71/x
  3. Step 3: Cross multiply
    326,990.50x = 489,773.76 × 158,154.71
  4. Step 4: Simplify right side
    326,990.50x = 77,460,026,978.41
  5. Step 5: Solve for x
    x = 77,460,026,978.41/326,990.50
  6. Step 6: Final answer
    x = 236,887.70

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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.