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Finding the Fourth Proportional to 637,978.58, 957,154.71 and 188,711.42

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Solution

The fourth proportional to 637,978.58, 957,154.71 and 188,711.42 is: 283,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,978.58 : 957,154.71 = 188,711.42 : x
  2. Step 2: Convert to fraction form
    637,978.58/957,154.71 = 188,711.42/x
  3. Step 3: Cross multiply
    637,978.58x = 957,154.71 × 188,711.42
  4. Step 4: Simplify right side
    637,978.58x = 180,626,019,698.02
  5. Step 5: Solve for x
    x = 180,626,019,698.02/637,978.58
  6. Step 6: Final answer
    x = 283,122.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.