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Finding the Fourth Proportional to 338,479.04, 507,723.96 and 128,060.48

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Solution

The fourth proportional to 338,479.04, 507,723.96 and 128,060.48 is: 192,092.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,479.04 : 507,723.96 = 128,060.48 : x
  2. Step 2: Convert to fraction form
    338,479.04/507,723.96 = 128,060.48/x
  3. Step 3: Cross multiply
    338,479.04x = 507,723.96 × 128,060.48
  4. Step 4: Simplify right side
    338,479.04x = 65,019,374,025.10
  5. Step 5: Solve for x
    x = 65,019,374,025.10/338,479.04
  6. Step 6: Final answer
    x = 192,092.76

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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.