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Finding the Fourth Proportional to 308,176.36, 425,414.36 and 187,356.23

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Solution

The fourth proportional to 308,176.36, 425,414.36 and 187,356.23 is: 258,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,176.36 : 425,414.36 = 187,356.23 : x
  2. Step 2: Convert to fraction form
    308,176.36/425,414.36 = 187,356.23/x
  3. Step 3: Cross multiply
    308,176.36x = 425,414.36 × 187,356.23
  4. Step 4: Simplify right side
    308,176.36x = 79,704,030,677.46
  5. Step 5: Solve for x
    x = 79,704,030,677.46/308,176.36
  6. Step 6: Final answer
    x = 258,631.23

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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.