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Finding the Fourth Proportional to 637,978.10, 957,154.26 and 188,710.78

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Solution

The fourth proportional to 637,978.10, 957,154.26 and 188,710.78 is: 283,121.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,978.10 : 957,154.26 = 188,710.78 : x
  2. Step 2: Convert to fraction form
    637,978.10/957,154.26 = 188,710.78/x
  3. Step 3: Cross multiply
    637,978.10x = 957,154.26 × 188,710.78
  4. Step 4: Simplify right side
    637,978.10x = 180,625,326,984.92
  5. Step 5: Solve for x
    x = 180,625,326,984.92/637,978.10
  6. Step 6: Final answer
    x = 283,121.52

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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.