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Finding the Fourth Proportional to 257,621.84, 386,395.82 and 124,466.34

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Solution

The fourth proportional to 257,621.84, 386,395.82 and 124,466.34 is: 186,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,621.84 : 386,395.82 = 124,466.34 : x
  2. Step 2: Convert to fraction form
    257,621.84/386,395.82 = 124,466.34/x
  3. Step 3: Cross multiply
    257,621.84x = 386,395.82 × 124,466.34
  4. Step 4: Simplify right side
    257,621.84x = 48,093,273,506.70
  5. Step 5: Solve for x
    x = 48,093,273,506.70/257,621.84
  6. Step 6: Final answer
    x = 186,681.66

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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.