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Finding the Fourth Proportional to 218,448.19, 301,386.22 and 127,739.89

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Solution

The fourth proportional to 218,448.19, 301,386.22 and 127,739.89 is: 176,238.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,448.19 : 301,386.22 = 127,739.89 : x
  2. Step 2: Convert to fraction form
    218,448.19/301,386.22 = 127,739.89/x
  3. Step 3: Cross multiply
    218,448.19x = 301,386.22 × 127,739.89
  4. Step 4: Simplify right side
    218,448.19x = 38,499,040,952.40
  5. Step 5: Solve for x
    x = 38,499,040,952.40/218,448.19
  6. Step 6: Final answer
    x = 176,238.77

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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.