Home / 218,210.25-301,128.18-122,717.63

Finding the Fourth Proportional to 218,210.25, 301,128.18 and 122,717.63

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Solution

The fourth proportional to 218,210.25, 301,128.18 and 122,717.63 is: 169,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,210.25 : 301,128.18 = 122,717.63 : x
  2. Step 2: Convert to fraction form
    218,210.25/301,128.18 = 122,717.63/x
  3. Step 3: Cross multiply
    218,210.25x = 301,128.18 × 122,717.63
  4. Step 4: Simplify right side
    218,210.25x = 36,953,737,558.73
  5. Step 5: Solve for x
    x = 36,953,737,558.73/218,210.25
  6. Step 6: Final answer
    x = 169,349.23

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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.