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Finding the Fourth Proportional to 318,181.76, 439,081.59 and 180,373.47

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Solution

The fourth proportional to 318,181.76, 439,081.59 and 180,373.47 is: 248,910.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,181.76 : 439,081.59 = 180,373.47 : x
  2. Step 2: Convert to fraction form
    318,181.76/439,081.59 = 180,373.47/x
  3. Step 3: Cross multiply
    318,181.76x = 439,081.59 × 180,373.47
  4. Step 4: Simplify right side
    318,181.76x = 79,198,667,509.36
  5. Step 5: Solve for x
    x = 79,198,667,509.36/318,181.76
  6. Step 6: Final answer
    x = 248,910.14

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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.