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Finding the Fourth Proportional to 328,014.20, 492,107.70 and 117,630.20

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Solution

The fourth proportional to 328,014.20, 492,107.70 and 117,630.20 is: 176,476.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,014.20 : 492,107.70 = 117,630.20 : x
  2. Step 2: Convert to fraction form
    328,014.20/492,107.70 = 117,630.20/x
  3. Step 3: Cross multiply
    328,014.20x = 492,107.70 × 117,630.20
  4. Step 4: Simplify right side
    328,014.20x = 57,886,727,172.54
  5. Step 5: Solve for x
    x = 57,886,727,172.54/328,014.20
  6. Step 6: Final answer
    x = 176,476.28

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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.