Home / 258,948.72-388,476.34-109,189.44

Finding the Fourth Proportional to 258,948.72, 388,476.34 and 109,189.44

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Solution

The fourth proportional to 258,948.72, 388,476.34 and 109,189.44 is: 163,806.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,948.72 : 388,476.34 = 109,189.44 : x
  2. Step 2: Convert to fraction form
    258,948.72/388,476.34 = 109,189.44/x
  3. Step 3: Cross multiply
    258,948.72x = 388,476.34 × 109,189.44
  4. Step 4: Simplify right side
    258,948.72x = 42,417,515,298.11
  5. Step 5: Solve for x
    x = 42,417,515,298.11/258,948.72
  6. Step 6: Final answer
    x = 163,806.62

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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.