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Finding the Fourth Proportional to 326,600.55, 489,900.86 and 101,980.23

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Solution

The fourth proportional to 326,600.55, 489,900.86 and 101,980.23 is: 152,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,600.55 : 489,900.86 = 101,980.23 : x
  2. Step 2: Convert to fraction form
    326,600.55/489,900.86 = 101,980.23/x
  3. Step 3: Cross multiply
    326,600.55x = 489,900.86 × 101,980.23
  4. Step 4: Simplify right side
    326,600.55x = 49,960,200,415.39
  5. Step 5: Solve for x
    x = 49,960,200,415.39/326,600.55
  6. Step 6: Final answer
    x = 152,970.35

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Double scale
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Similar ratio
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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.