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Finding the Fourth Proportional to 281,162.22, 388,003.41 and 153,838.32

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Solution

The fourth proportional to 281,162.22, 388,003.41 and 153,838.32 is: 212,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,162.22 : 388,003.41 = 153,838.32 : x
  2. Step 2: Convert to fraction form
    281,162.22/388,003.41 = 153,838.32/x
  3. Step 3: Cross multiply
    281,162.22x = 388,003.41 × 153,838.32
  4. Step 4: Simplify right side
    281,162.22x = 59,689,792,748.67
  5. Step 5: Solve for x
    x = 59,689,792,748.67/281,162.22
  6. Step 6: Final answer
    x = 212,296.63

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1.5x scale

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.