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Finding the Fourth Proportional to 281,522.63, 388,507.55 and 160,661.51

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Solution

The fourth proportional to 281,522.63, 388,507.55 and 160,661.51 is: 221,716.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,522.63 : 388,507.55 = 160,661.51 : x
  2. Step 2: Convert to fraction form
    281,522.63/388,507.55 = 160,661.51/x
  3. Step 3: Cross multiply
    281,522.63x = 388,507.55 × 160,661.51
  4. Step 4: Simplify right side
    281,522.63x = 62,418,208,826.09
  5. Step 5: Solve for x
    x = 62,418,208,826.09/281,522.63
  6. Step 6: Final answer
    x = 221,716.49

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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.