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Finding the Fourth Proportional to 229,477.16, 316,676.58 and 128,873

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Solution

The fourth proportional to 229,477.16, 316,676.58 and 128,873 is: 177,843.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,477.16 : 316,676.58 = 128,873 : x
  2. Step 2: Convert to fraction form
    229,477.16/316,676.58 = 128,873/x
  3. Step 3: Cross multiply
    229,477.16x = 316,676.58 × 128,873
  4. Step 4: Simplify right side
    229,477.16x = 40,811,060,894.34
  5. Step 5: Solve for x
    x = 40,811,060,894.34/229,477.16
  6. Step 6: Final answer
    x = 177,843.67

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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.