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Finding the Fourth Proportional to 313,279.21, 432,325.81 and 170,039.32

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Solution

The fourth proportional to 313,279.21, 432,325.81 and 170,039.32 is: 234,654.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,279.21 : 432,325.81 = 170,039.32 : x
  2. Step 2: Convert to fraction form
    313,279.21/432,325.81 = 170,039.32/x
  3. Step 3: Cross multiply
    313,279.21x = 432,325.81 × 170,039.32
  4. Step 4: Simplify right side
    313,279.21x = 73,512,386,750.85
  5. Step 5: Solve for x
    x = 73,512,386,750.85/313,279.21
  6. Step 6: Final answer
    x = 234,654.53

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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.