Home / 258,892.81-388,383.50-118,663.45

Finding the Fourth Proportional to 258,892.81, 388,383.50 and 118,663.45

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Solution

The fourth proportional to 258,892.81, 388,383.50 and 118,663.45 is: 178,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,892.81 : 388,383.50 = 118,663.45 : x
  2. Step 2: Convert to fraction form
    258,892.81/388,383.50 = 118,663.45/x
  3. Step 3: Cross multiply
    258,892.81x = 388,383.50 × 118,663.45
  4. Step 4: Simplify right side
    258,892.81x = 46,086,926,033.08
  5. Step 5: Solve for x
    x = 46,086,926,033.08/258,892.81
  6. Step 6: Final answer
    x = 178,015.47

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1.5x scale

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.