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Finding the Fourth Proportional to 307,626.84, 424,654.57 and 186,807.05

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Solution

The fourth proportional to 307,626.84, 424,654.57 and 186,807.05 is: 257,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,626.84 : 424,654.57 = 186,807.05 : x
  2. Step 2: Convert to fraction form
    307,626.84/424,654.57 = 186,807.05/x
  3. Step 3: Cross multiply
    307,626.84x = 424,654.57 × 186,807.05
  4. Step 4: Simplify right side
    307,626.84x = 79,328,467,121.63
  5. Step 5: Solve for x
    x = 79,328,467,121.63/307,626.84
  6. Step 6: Final answer
    x = 257,872.39

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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.