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Finding the Fourth Proportional to 318,869.80, 440,043.30 and 175,630.36

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Solution

The fourth proportional to 318,869.80, 440,043.30 and 175,630.36 is: 242,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,869.80 : 440,043.30 = 175,630.36 : x
  2. Step 2: Convert to fraction form
    318,869.80/440,043.30 = 175,630.36/x
  3. Step 3: Cross multiply
    318,869.80x = 440,043.30 × 175,630.36
  4. Step 4: Simplify right side
    318,869.80x = 77,284,963,194.59
  5. Step 5: Solve for x
    x = 77,284,963,194.59/318,869.80
  6. Step 6: Final answer
    x = 242,371.54

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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.