Home / 218,788.40-301,930.44-128,124.56

Finding the Fourth Proportional to 218,788.40, 301,930.44 and 128,124.56

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Solution

The fourth proportional to 218,788.40, 301,930.44 and 128,124.56 is: 176,813.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,788.40 : 301,930.44 = 128,124.56 : x
  2. Step 2: Convert to fraction form
    218,788.40/301,930.44 = 128,124.56/x
  3. Step 3: Cross multiply
    218,788.40x = 301,930.44 × 128,124.56
  4. Step 4: Simplify right side
    218,788.40x = 38,684,704,775.61
  5. Step 5: Solve for x
    x = 38,684,704,775.61/218,788.40
  6. Step 6: Final answer
    x = 176,813.33

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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.