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Finding the Fourth Proportional to 229,492.88, 316,665.72 and 128,871.44

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Solution

The fourth proportional to 229,492.88, 316,665.72 and 128,871.44 is: 177,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,492.88 : 316,665.72 = 128,871.44 : x
  2. Step 2: Convert to fraction form
    229,492.88/316,665.72 = 128,871.44/x
  3. Step 3: Cross multiply
    229,492.88x = 316,665.72 × 128,871.44
  4. Step 4: Simplify right side
    229,492.88x = 40,809,167,335.04
  5. Step 5: Solve for x
    x = 40,809,167,335.04/229,492.88
  6. Step 6: Final answer
    x = 177,823.24

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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.