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Finding the Fourth Proportional to 213,262.47, 320,139.75 and 108,302.88

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Solution

The fourth proportional to 213,262.47, 320,139.75 and 108,302.88 is: 162,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,262.47 : 320,139.75 = 108,302.88 : x
  2. Step 2: Convert to fraction form
    213,262.47/320,139.75 = 108,302.88/x
  3. Step 3: Cross multiply
    213,262.47x = 320,139.75 × 108,302.88
  4. Step 4: Simplify right side
    213,262.47x = 34,672,056,927.48
  5. Step 5: Solve for x
    x = 34,672,056,927.48/213,262.47
  6. Step 6: Final answer
    x = 162,579.27

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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.