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Finding the Fourth Proportional to 318,633.39, 439,710.66 and 175,390.38

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Solution

The fourth proportional to 318,633.39, 439,710.66 and 175,390.38 is: 242,036.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,633.39 : 439,710.66 = 175,390.38 : x
  2. Step 2: Convert to fraction form
    318,633.39/439,710.66 = 175,390.38/x
  3. Step 3: Cross multiply
    318,633.39x = 439,710.66 × 175,390.38
  4. Step 4: Simplify right side
    318,633.39x = 77,121,019,747.45
  5. Step 5: Solve for x
    x = 77,121,019,747.45/318,633.39
  6. Step 6: Final answer
    x = 242,036.84

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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.