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Finding the Fourth Proportional to 281,551.30, 388,447.77 and 172,615.30

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Solution

The fourth proportional to 281,551.30, 388,447.77 and 172,615.30 is: 238,152.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,551.30 : 388,447.77 = 172,615.30 : x
  2. Step 2: Convert to fraction form
    281,551.30/388,447.77 = 172,615.30/x
  3. Step 3: Cross multiply
    281,551.30x = 388,447.77 × 172,615.30
  4. Step 4: Simplify right side
    281,551.30x = 67,052,028,352.88
  5. Step 5: Solve for x
    x = 67,052,028,352.88/281,551.30
  6. Step 6: Final answer
    x = 238,152.08

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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.