Home / 229,383.12-316,544.04-128,781.12

Finding the Fourth Proportional to 229,383.12, 316,544.04 and 128,781.12

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Solution

The fourth proportional to 229,383.12, 316,544.04 and 128,781.12 is: 177,715.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,383.12 : 316,544.04 = 128,781.12 : x
  2. Step 2: Convert to fraction form
    229,383.12/316,544.04 = 128,781.12/x
  3. Step 3: Cross multiply
    229,383.12x = 316,544.04 × 128,781.12
  4. Step 4: Simplify right side
    229,383.12x = 40,764,896,000.52
  5. Step 5: Solve for x
    x = 40,764,896,000.52/229,383.12
  6. Step 6: Final answer
    x = 177,715.33

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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.