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Finding the Fourth Proportional to 281,007.63, 387,776.51 and 160,154.01

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Solution

The fourth proportional to 281,007.63, 387,776.51 and 160,154.01 is: 221,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,007.63 : 387,776.51 = 160,154.01 : x
  2. Step 2: Convert to fraction form
    281,007.63/387,776.51 = 160,154.01/x
  3. Step 3: Cross multiply
    281,007.63x = 387,776.51 × 160,154.01
  4. Step 4: Simplify right side
    281,007.63x = 62,103,963,760.98
  5. Step 5: Solve for x
    x = 62,103,963,760.98/281,007.63
  6. Step 6: Final answer
    x = 221,004.55

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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.