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Finding the Fourth Proportional to 388,872.38, 536,644.08 and 210,024.38

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Solution

The fourth proportional to 388,872.38, 536,644.08 and 210,024.38 is: 289,833.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,872.38 : 536,644.08 = 210,024.38 : x
  2. Step 2: Convert to fraction form
    388,872.38/536,644.08 = 210,024.38/x
  3. Step 3: Cross multiply
    388,872.38x = 536,644.08 × 210,024.38
  4. Step 4: Simplify right side
    388,872.38x = 112,708,337,499.45
  5. Step 5: Solve for x
    x = 112,708,337,499.45/388,872.38
  6. Step 6: Final answer
    x = 289,833.75

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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.