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Finding the Fourth Proportional to 316,128.39, 473,707.79 and 214,797.39

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Solution

The fourth proportional to 316,128.39, 473,707.79 and 214,797.39 is: 321,866.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,128.39 : 473,707.79 = 214,797.39 : x
  2. Step 2: Convert to fraction form
    316,128.39/473,707.79 = 214,797.39/x
  3. Step 3: Cross multiply
    316,128.39x = 473,707.79 × 214,797.39
  4. Step 4: Simplify right side
    316,128.39x = 101,751,196,078.00
  5. Step 5: Solve for x
    x = 101,751,196,078.00/316,128.39
  6. Step 6: Final answer
    x = 321,866.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.