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Finding the Fourth Proportional to 338,449.73, 507,675.26 and 85,730.27

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Solution

The fourth proportional to 338,449.73, 507,675.26 and 85,730.27 is: 128,595.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,449.73 : 507,675.26 = 85,730.27 : x
  2. Step 2: Convert to fraction form
    338,449.73/507,675.26 = 85,730.27/x
  3. Step 3: Cross multiply
    338,449.73x = 507,675.26 × 85,730.27
  4. Step 4: Simplify right side
    338,449.73x = 43,523,134,788.07
  5. Step 5: Solve for x
    x = 43,523,134,788.07/338,449.73
  6. Step 6: Final answer
    x = 128,595.57

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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.