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Finding the Fourth Proportional to 281,537.12, 388,374 and 174,072.80

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Solution

The fourth proportional to 281,537.12, 388,374 and 174,072.80 is: 240,129.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,537.12 : 388,374 = 174,072.80 : x
  2. Step 2: Convert to fraction form
    281,537.12/388,374 = 174,072.80/x
  3. Step 3: Cross multiply
    281,537.12x = 388,374 × 174,072.80
  4. Step 4: Simplify right side
    281,537.12x = 67,605,349,627.20
  5. Step 5: Solve for x
    x = 67,605,349,627.20/281,537.12
  6. Step 6: Final answer
    x = 240,129.44

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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.