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Finding the Fourth Proportional to 388,900.25, 536,682.71 and 210,052.25

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Solution

The fourth proportional to 388,900.25, 536,682.71 and 210,052.25 is: 289,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,900.25 : 536,682.71 = 210,052.25 : x
  2. Step 2: Convert to fraction form
    388,900.25/536,682.71 = 210,052.25/x
  3. Step 3: Cross multiply
    388,900.25x = 536,682.71 × 210,052.25
  4. Step 4: Simplify right side
    388,900.25x = 112,731,409,721.34
  5. Step 5: Solve for x
    x = 112,731,409,721.34/388,900.25
  6. Step 6: Final answer
    x = 289,872.30

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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.