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Finding the Fourth Proportional to 388,901.25, 536,684.09 and 210,053.25

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Solution

The fourth proportional to 388,901.25, 536,684.09 and 210,053.25 is: 289,873.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,901.25 : 536,684.09 = 210,053.25 : x
  2. Step 2: Convert to fraction form
    388,901.25/536,684.09 = 210,053.25/x
  3. Step 3: Cross multiply
    388,901.25x = 536,684.09 × 210,053.25
  4. Step 4: Simplify right side
    388,901.25x = 112,732,236,277.53
  5. Step 5: Solve for x
    x = 112,732,236,277.53/388,901.25
  6. Step 6: Final answer
    x = 289,873.68

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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.