Home / 218,403.38-301,395.72-122,911.70

Finding the Fourth Proportional to 218,403.38, 301,395.72 and 122,911.70

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Solution

The fourth proportional to 218,403.38, 301,395.72 and 122,911.70 is: 169,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,403.38 : 301,395.72 = 122,911.70 : x
  2. Step 2: Convert to fraction form
    218,403.38/301,395.72 = 122,911.70/x
  3. Step 3: Cross multiply
    218,403.38x = 301,395.72 × 122,911.70
  4. Step 4: Simplify right side
    218,403.38x = 37,045,060,317.92
  5. Step 5: Solve for x
    x = 37,045,060,317.92/218,403.38
  6. Step 6: Final answer
    x = 169,617.61

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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.