Home / 230,830.40-346,159.20-81,012.80

Finding the Fourth Proportional to 230,830.40, 346,159.20 and 81,012.80

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Solution

The fourth proportional to 230,830.40, 346,159.20 and 81,012.80 is: 121,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,830.40 : 346,159.20 = 81,012.80 : x
  2. Step 2: Convert to fraction form
    230,830.40/346,159.20 = 81,012.80/x
  3. Step 3: Cross multiply
    230,830.40x = 346,159.20 × 81,012.80
  4. Step 4: Simplify right side
    230,830.40x = 28,043,326,037.76
  5. Step 5: Solve for x
    x = 28,043,326,037.76/230,830.40
  6. Step 6: Final answer
    x = 121,488.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.