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Finding the Fourth Proportional to 229,398.12, 316,564.74 and 128,796.12

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Solution

The fourth proportional to 229,398.12, 316,564.74 and 128,796.12 is: 177,736.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,398.12 : 316,564.74 = 128,796.12 : x
  2. Step 2: Convert to fraction form
    229,398.12/316,564.74 = 128,796.12/x
  3. Step 3: Cross multiply
    229,398.12x = 316,564.74 × 128,796.12
  4. Step 4: Simplify right side
    229,398.12x = 40,772,310,240.81
  5. Step 5: Solve for x
    x = 40,772,310,240.81/229,398.12
  6. Step 6: Final answer
    x = 177,736.03

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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.