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Finding the Fourth Proportional to 388,893.84, 536,673.51 and 210,045.84

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Solution

The fourth proportional to 388,893.84, 536,673.51 and 210,045.84 is: 289,863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,893.84 : 536,673.51 = 210,045.84 : x
  2. Step 2: Convert to fraction form
    388,893.84/536,673.51 = 210,045.84/x
  3. Step 3: Cross multiply
    388,893.84x = 536,673.51 × 210,045.84
  4. Step 4: Simplify right side
    388,893.84x = 112,726,038,213.70
  5. Step 5: Solve for x
    x = 112,726,038,213.70/388,893.84
  6. Step 6: Final answer
    x = 289,863.27

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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.