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Finding the Fourth Proportional to 479,878.93, 720,254.63 and 255,427.12

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Solution

The fourth proportional to 479,878.93, 720,254.63 and 255,427.12 is: 383,372.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,878.93 : 720,254.63 = 255,427.12 : x
  2. Step 2: Convert to fraction form
    479,878.93/720,254.63 = 255,427.12/x
  3. Step 3: Cross multiply
    479,878.93x = 720,254.63 × 255,427.12
  4. Step 4: Simplify right side
    479,878.93x = 183,972,564,530.43
  5. Step 5: Solve for x
    x = 183,972,564,530.43/479,878.93
  6. Step 6: Final answer
    x = 383,372.87

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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.