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Finding the Fourth Proportional to 318,710.96, 439,820.04 and 175,471.28

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Solution

The fourth proportional to 318,710.96, 439,820.04 and 175,471.28 is: 242,149.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,710.96 : 439,820.04 = 175,471.28 : x
  2. Step 2: Convert to fraction form
    318,710.96/439,820.04 = 175,471.28/x
  3. Step 3: Cross multiply
    318,710.96x = 439,820.04 × 175,471.28
  4. Step 4: Simplify right side
    318,710.96x = 77,175,785,388.45
  5. Step 5: Solve for x
    x = 77,175,785,388.45/318,710.96
  6. Step 6: Final answer
    x = 242,149.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.