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Finding the Fourth Proportional to 308,395.53, 425,602.08 and 187,516.80

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Solution

The fourth proportional to 308,395.53, 425,602.08 and 187,516.80 is: 258,783.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,395.53 : 425,602.08 = 187,516.80 : x
  2. Step 2: Convert to fraction form
    308,395.53/425,602.08 = 187,516.80/x
  3. Step 3: Cross multiply
    308,395.53x = 425,602.08 × 187,516.80
  4. Step 4: Simplify right side
    308,395.53x = 79,807,540,114.94
  5. Step 5: Solve for x
    x = 79,807,540,114.94/308,395.53
  6. Step 6: Final answer
    x = 258,783.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.