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Finding the Fourth Proportional to 280,642.44, 387,304.44 and 159,794.28

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Solution

The fourth proportional to 280,642.44, 387,304.44 and 159,794.28 is: 220,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,642.44 : 387,304.44 = 159,794.28 : x
  2. Step 2: Convert to fraction form
    280,642.44/387,304.44 = 159,794.28/x
  3. Step 3: Cross multiply
    280,642.44x = 387,304.44 × 159,794.28
  4. Step 4: Simplify right side
    280,642.44x = 61,889,034,130.60
  5. Step 5: Solve for x
    x = 61,889,034,130.60/280,642.44
  6. Step 6: Final answer
    x = 220,526.28

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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.