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Finding the Fourth Proportional to 262,033.84, 393,012.42 and 128,878.30

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Solution

The fourth proportional to 262,033.84, 393,012.42 and 128,878.30 is: 193,298.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,033.84 : 393,012.42 = 128,878.30 : x
  2. Step 2: Convert to fraction form
    262,033.84/393,012.42 = 128,878.30/x
  3. Step 3: Cross multiply
    262,033.84x = 393,012.42 × 128,878.30
  4. Step 4: Simplify right side
    262,033.84x = 50,650,772,568.49
  5. Step 5: Solve for x
    x = 50,650,772,568.49/262,033.84
  6. Step 6: Final answer
    x = 193,298.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.