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Finding the Fourth Proportional to 330,901.04, 492,609.12 and 328,932.72

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Solution

The fourth proportional to 330,901.04, 492,609.12 and 328,932.72 is: 489,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,901.04 : 492,609.12 = 328,932.72 : x
  2. Step 2: Convert to fraction form
    330,901.04/492,609.12 = 328,932.72/x
  3. Step 3: Cross multiply
    330,901.04x = 492,609.12 × 328,932.72
  4. Step 4: Simplify right side
    330,901.04x = 162,035,257,738.41
  5. Step 5: Solve for x
    x = 162,035,257,738.41/330,901.04
  6. Step 6: Final answer
    x = 489,678.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.