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Finding the Fourth Proportional to 218,682.36, 301,678.47 and 127,982.13

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Solution

The fourth proportional to 218,682.36, 301,678.47 and 127,982.13 is: 176,554.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,682.36 : 301,678.47 = 127,982.13 : x
  2. Step 2: Convert to fraction form
    218,682.36/301,678.47 = 127,982.13/x
  3. Step 3: Cross multiply
    218,682.36x = 301,678.47 × 127,982.13
  4. Step 4: Simplify right side
    218,682.36x = 38,609,453,165.74
  5. Step 5: Solve for x
    x = 38,609,453,165.74/218,682.36
  6. Step 6: Final answer
    x = 176,554.95

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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.