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Finding the Fourth Proportional to 318,632.68, 439,722.66 and 175,395.88

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Solution

The fourth proportional to 318,632.68, 439,722.66 and 175,395.88 is: 242,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,632.68 : 439,722.66 = 175,395.88 : x
  2. Step 2: Convert to fraction form
    318,632.68/439,722.66 = 175,395.88/x
  3. Step 3: Cross multiply
    318,632.68x = 439,722.66 × 175,395.88
  4. Step 4: Simplify right side
    318,632.68x = 77,125,542,906.64
  5. Step 5: Solve for x
    x = 77,125,542,906.64/318,632.68
  6. Step 6: Final answer
    x = 242,051.58

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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.