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Finding the Fourth Proportional to 318,378, 439,332.84 and 175,144.08

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Solution

The fourth proportional to 318,378, 439,332.84 and 175,144.08 is: 241,682.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,378 : 439,332.84 = 175,144.08 : x
  2. Step 2: Convert to fraction form
    318,378/439,332.84 = 175,144.08/x
  3. Step 3: Cross multiply
    318,378x = 439,332.84 × 175,144.08
  4. Step 4: Simplify right side
    318,378x = 76,946,546,075.59
  5. Step 5: Solve for x
    x = 76,946,546,075.59/318,378
  6. Step 6: Final answer
    x = 241,682.99

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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.