Home / 291,512.72-402,289.80-164,176.40

Finding the Fourth Proportional to 291,512.72, 402,289.80 and 164,176.40

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Solution

The fourth proportional to 291,512.72, 402,289.80 and 164,176.40 is: 226,564.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,512.72 : 402,289.80 = 164,176.40 : x
  2. Step 2: Convert to fraction form
    291,512.72/402,289.80 = 164,176.40/x
  3. Step 3: Cross multiply
    291,512.72x = 402,289.80 × 164,176.40
  4. Step 4: Simplify right side
    291,512.72x = 66,046,491,120.72
  5. Step 5: Solve for x
    x = 66,046,491,120.72/291,512.72
  6. Step 6: Final answer
    x = 226,564.70

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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.