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Finding the Fourth Proportional to 310,383.30, 428,297.04 and 174,395.64

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Solution

The fourth proportional to 310,383.30, 428,297.04 and 174,395.64 is: 240,648.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,383.30 : 428,297.04 = 174,395.64 : x
  2. Step 2: Convert to fraction form
    310,383.30/428,297.04 = 174,395.64/x
  3. Step 3: Cross multiply
    310,383.30x = 428,297.04 × 174,395.64
  4. Step 4: Simplify right side
    310,383.30x = 74,693,136,400.91
  5. Step 5: Solve for x
    x = 74,693,136,400.91/310,383.30
  6. Step 6: Final answer
    x = 240,648.05

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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.