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Finding the Fourth Proportional to 326,620.64, 489,930.76 and 102,000.32

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Solution

The fourth proportional to 326,620.64, 489,930.76 and 102,000.32 is: 153,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,620.64 : 489,930.76 = 102,000.32 : x
  2. Step 2: Convert to fraction form
    326,620.64/489,930.76 = 102,000.32/x
  3. Step 3: Cross multiply
    326,620.64x = 489,930.76 × 102,000.32
  4. Step 4: Simplify right side
    326,620.64x = 49,973,095,190.86
  5. Step 5: Solve for x
    x = 49,973,095,190.86/326,620.64
  6. Step 6: Final answer
    x = 153,000.42

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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.