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Finding the Fourth Proportional to 225,301.98, 310,776.71 and 139,287.27

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Solution

The fourth proportional to 225,301.98, 310,776.71 and 139,287.27 is: 192,129.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,301.98 : 310,776.71 = 139,287.27 : x
  2. Step 2: Convert to fraction form
    225,301.98/310,776.71 = 139,287.27/x
  3. Step 3: Cross multiply
    225,301.98x = 310,776.71 × 139,287.27
  4. Step 4: Simplify right side
    225,301.98x = 43,287,237,265.16
  5. Step 5: Solve for x
    x = 43,287,237,265.16/225,301.98
  6. Step 6: Final answer
    x = 192,129.86

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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.