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Finding the Fourth Proportional to 229,636.16, 316,903.20 and 129,035.84

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Solution

The fourth proportional to 229,636.16, 316,903.20 and 129,035.84 is: 178,072.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,636.16 : 316,903.20 = 129,035.84 : x
  2. Step 2: Convert to fraction form
    229,636.16/316,903.20 = 129,035.84/x
  3. Step 3: Cross multiply
    229,636.16x = 316,903.20 × 129,035.84
  4. Step 4: Simplify right side
    229,636.16x = 40,891,870,610.69
  5. Step 5: Solve for x
    x = 40,891,870,610.69/229,636.16
  6. Step 6: Final answer
    x = 178,072.44

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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.