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Finding the Fourth Proportional to 228,121.80, 314,796.42 and 127,519.80

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Solution

The fourth proportional to 228,121.80, 314,796.42 and 127,519.80 is: 175,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,121.80 : 314,796.42 = 127,519.80 : x
  2. Step 2: Convert to fraction form
    228,121.80/314,796.42 = 127,519.80/x
  3. Step 3: Cross multiply
    228,121.80x = 314,796.42 × 127,519.80
  4. Step 4: Simplify right side
    228,121.80x = 40,142,776,519.12
  5. Step 5: Solve for x
    x = 40,142,776,519.12/228,121.80
  6. Step 6: Final answer
    x = 175,970.80

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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.