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Finding the Fourth Proportional to 230,370.17, 317,936.70 and 128,404.94

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Solution

The fourth proportional to 230,370.17, 317,936.70 and 128,404.94 is: 177,213.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,370.17 : 317,936.70 = 128,404.94 : x
  2. Step 2: Convert to fraction form
    230,370.17/317,936.70 = 128,404.94/x
  3. Step 3: Cross multiply
    230,370.17x = 317,936.70 × 128,404.94
  4. Step 4: Simplify right side
    230,370.17x = 40,824,641,297.61
  5. Step 5: Solve for x
    x = 40,824,641,297.61/230,370.17
  6. Step 6: Final answer
    x = 177,213.23

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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.