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Finding the Fourth Proportional to 313,709.39, 432,935.55 and 177,769.70

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Solution

The fourth proportional to 313,709.39, 432,935.55 and 177,769.70 is: 245,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,709.39 : 432,935.55 = 177,769.70 : x
  2. Step 2: Convert to fraction form
    313,709.39/432,935.55 = 177,769.70/x
  3. Step 3: Cross multiply
    313,709.39x = 432,935.55 × 177,769.70
  4. Step 4: Simplify right side
    313,709.39x = 76,962,822,842.84
  5. Step 5: Solve for x
    x = 76,962,822,842.84/313,709.39
  6. Step 6: Final answer
    x = 245,331.59

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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.