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Finding the Fourth Proportional to 313,624.64, 432,770.78 and 177,631.44

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Solution

The fourth proportional to 313,624.64, 432,770.78 and 177,631.44 is: 245,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,624.64 : 432,770.78 = 177,631.44 : x
  2. Step 2: Convert to fraction form
    313,624.64/432,770.78 = 177,631.44/x
  3. Step 3: Cross multiply
    313,624.64x = 432,770.78 × 177,631.44
  4. Step 4: Simplify right side
    313,624.64x = 76,873,696,841.32
  5. Step 5: Solve for x
    x = 76,873,696,841.32/313,624.64
  6. Step 6: Final answer
    x = 245,113.70

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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.