Home / 229,429.72-316,616.70-128,825.56

Finding the Fourth Proportional to 229,429.72, 316,616.70 and 128,825.56

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Solution

The fourth proportional to 229,429.72, 316,616.70 and 128,825.56 is: 177,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,429.72 : 316,616.70 = 128,825.56 : x
  2. Step 2: Convert to fraction form
    229,429.72/316,616.70 = 128,825.56/x
  3. Step 3: Cross multiply
    229,429.72x = 316,616.70 × 128,825.56
  4. Step 4: Simplify right side
    229,429.72x = 40,788,323,682.85
  5. Step 5: Solve for x
    x = 40,788,323,682.85/229,429.72
  6. Step 6: Final answer
    x = 177,781.34

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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.