Home / 400,128.02-552,168.86-218,839.36

Finding the Fourth Proportional to 400,128.02, 552,168.86 and 218,839.36

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Solution

The fourth proportional to 400,128.02, 552,168.86 and 218,839.36 is: 301,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,128.02 : 552,168.86 = 218,839.36 : x
  2. Step 2: Convert to fraction form
    400,128.02/552,168.86 = 218,839.36/x
  3. Step 3: Cross multiply
    400,128.02x = 552,168.86 × 218,839.36
  4. Step 4: Simplify right side
    400,128.02x = 120,836,279,934.33
  5. Step 5: Solve for x
    x = 120,836,279,934.33/400,128.02
  6. Step 6: Final answer
    x = 301,994.05

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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.