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Finding the Fourth Proportional to 326,415.60, 489,623.40 and 89,794.80

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Solution

The fourth proportional to 326,415.60, 489,623.40 and 89,794.80 is: 134,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,415.60 : 489,623.40 = 89,794.80 : x
  2. Step 2: Convert to fraction form
    326,415.60/489,623.40 = 89,794.80/x
  3. Step 3: Cross multiply
    326,415.60x = 489,623.40 × 89,794.80
  4. Step 4: Simplify right side
    326,415.60x = 43,965,635,278.32
  5. Step 5: Solve for x
    x = 43,965,635,278.32/326,415.60
  6. Step 6: Final answer
    x = 134,692.20

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1.5x scale

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.