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Finding the Fourth Proportional to 258,969.84, 357,412.44 and 145,814.64

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Solution

The fourth proportional to 258,969.84, 357,412.44 and 145,814.64 is: 201,243.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,969.84 : 357,412.44 = 145,814.64 : x
  2. Step 2: Convert to fraction form
    258,969.84/357,412.44 = 145,814.64/x
  3. Step 3: Cross multiply
    258,969.84x = 357,412.44 × 145,814.64
  4. Step 4: Simplify right side
    258,969.84x = 52,115,966,270.12
  5. Step 5: Solve for x
    x = 52,115,966,270.12/258,969.84
  6. Step 6: Final answer
    x = 201,243.38

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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.