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Finding the Fourth Proportional to 257,847.69, 386,771.00 and 145,476.89

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Solution

The fourth proportional to 257,847.69, 386,771.00 and 145,476.89 is: 218,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,847.69 : 386,771.00 = 145,476.89 : x
  2. Step 2: Convert to fraction form
    257,847.69/386,771.00 = 145,476.89/x
  3. Step 3: Cross multiply
    257,847.69x = 386,771.00 × 145,476.89
  4. Step 4: Simplify right side
    257,847.69x = 56,266,242,825.43
  5. Step 5: Solve for x
    x = 56,266,242,825.43/257,847.69
  6. Step 6: Final answer
    x = 218,215.04

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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.