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Finding the Fourth Proportional to 229,106.08, 316,165.44 and 128,504.08

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Solution

The fourth proportional to 229,106.08, 316,165.44 and 128,504.08 is: 177,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,106.08 : 316,165.44 = 128,504.08 : x
  2. Step 2: Convert to fraction form
    229,106.08/316,165.44 = 128,504.08/x
  3. Step 3: Cross multiply
    229,106.08x = 316,165.44 × 128,504.08
  4. Step 4: Simplify right side
    229,106.08x = 40,628,548,995.00
  5. Step 5: Solve for x
    x = 40,628,548,995.00/229,106.08
  6. Step 6: Final answer
    x = 177,335.10

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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.