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Finding the Fourth Proportional to 360,315.36, 540,481.14 and 123,660

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Solution

The fourth proportional to 360,315.36, 540,481.14 and 123,660 is: 185,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,315.36 : 540,481.14 = 123,660 : x
  2. Step 2: Convert to fraction form
    360,315.36/540,481.14 = 123,660/x
  3. Step 3: Cross multiply
    360,315.36x = 540,481.14 × 123,660
  4. Step 4: Simplify right side
    360,315.36x = 66,835,897,772.40
  5. Step 5: Solve for x
    x = 66,835,897,772.40/360,315.36
  6. Step 6: Final answer
    x = 185,492.78

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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.