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Finding the Fourth Proportional to 318,376.51, 439,366.39 and 175,136.56

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Solution

The fourth proportional to 318,376.51, 439,366.39 and 175,136.56 is: 241,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,376.51 : 439,366.39 = 175,136.56 : x
  2. Step 2: Convert to fraction form
    318,376.51/439,366.39 = 175,136.56/x
  3. Step 3: Cross multiply
    318,376.51x = 439,366.39 × 175,136.56
  4. Step 4: Simplify right side
    318,376.51x = 76,949,116,587.96
  5. Step 5: Solve for x
    x = 76,949,116,587.96/318,376.51
  6. Step 6: Final answer
    x = 241,692.19

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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.