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Finding the Fourth Proportional to 388,832.88, 536,589.38 and 209,984.88

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Solution

The fourth proportional to 388,832.88, 536,589.38 and 209,984.88 is: 289,779.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,832.88 : 536,589.38 = 209,984.88 : x
  2. Step 2: Convert to fraction form
    388,832.88/536,589.38 = 209,984.88/x
  3. Step 3: Cross multiply
    388,832.88x = 536,589.38 × 209,984.88
  4. Step 4: Simplify right side
    388,832.88x = 112,675,656,568.57
  5. Step 5: Solve for x
    x = 112,675,656,568.57/388,832.88
  6. Step 6: Final answer
    x = 289,779.14

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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.