Home / 268,830.72-403,012.80-135,599.76

Finding the Fourth Proportional to 268,830.72, 403,012.80 and 135,599.76

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Solution

The fourth proportional to 268,830.72, 403,012.80 and 135,599.76 is: 203,281.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,830.72 : 403,012.80 = 135,599.76 : x
  2. Step 2: Convert to fraction form
    268,830.72/403,012.80 = 135,599.76/x
  3. Step 3: Cross multiply
    268,830.72x = 403,012.80 × 135,599.76
  4. Step 4: Simplify right side
    268,830.72x = 54,648,438,956.93
  5. Step 5: Solve for x
    x = 54,648,438,956.93/268,830.72
  6. Step 6: Final answer
    x = 203,281.97

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1.5x scale

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.