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Finding the Fourth Proportional to 318,879.93, 440,054.22 and 175,639.97

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Solution

The fourth proportional to 318,879.93, 440,054.22 and 175,639.97 is: 242,383.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,879.93 : 440,054.22 = 175,639.97 : x
  2. Step 2: Convert to fraction form
    318,879.93/440,054.22 = 175,639.97/x
  3. Step 3: Cross multiply
    318,879.93x = 440,054.22 × 175,639.97
  4. Step 4: Simplify right side
    318,879.93x = 77,291,109,999.17
  5. Step 5: Solve for x
    x = 77,291,109,999.17/318,879.93
  6. Step 6: Final answer
    x = 242,383.11

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1.5x scale

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.