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Finding the Fourth Proportional to 318,607.70, 439,661.93 and 175,340.36

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Solution

The fourth proportional to 318,607.70, 439,661.93 and 175,340.36 is: 241,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,607.70 : 439,661.93 = 175,340.36 : x
  2. Step 2: Convert to fraction form
    318,607.70/439,661.93 = 175,340.36/x
  3. Step 3: Cross multiply
    318,607.70x = 439,661.93 × 175,340.36
  4. Step 4: Simplify right side
    318,607.70x = 77,090,481,306.95
  5. Step 5: Solve for x
    x = 77,090,481,306.95/318,607.70
  6. Step 6: Final answer
    x = 241,960.51

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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.