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Finding the Fourth Proportional to 438,326.82, 657,519.66 and 153,982.80

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Solution

The fourth proportional to 438,326.82, 657,519.66 and 153,982.80 is: 230,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,326.82 : 657,519.66 = 153,982.80 : x
  2. Step 2: Convert to fraction form
    438,326.82/657,519.66 = 153,982.80/x
  3. Step 3: Cross multiply
    438,326.82x = 657,519.66 × 153,982.80
  4. Step 4: Simplify right side
    438,326.82x = 101,246,718,301.85
  5. Step 5: Solve for x
    x = 101,246,718,301.85/438,326.82
  6. Step 6: Final answer
    x = 230,984.54

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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.