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Finding the Fourth Proportional to 328,003.80, 492,005.70 and 187,776.60

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Solution

The fourth proportional to 328,003.80, 492,005.70 and 187,776.60 is: 281,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,003.80 : 492,005.70 = 187,776.60 : x
  2. Step 2: Convert to fraction form
    328,003.80/492,005.70 = 187,776.60/x
  3. Step 3: Cross multiply
    328,003.80x = 492,005.70 × 187,776.60
  4. Step 4: Simplify right side
    328,003.80x = 92,387,157,526.62
  5. Step 5: Solve for x
    x = 92,387,157,526.62/328,003.80
  6. Step 6: Final answer
    x = 281,664.90

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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.