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Finding the Fourth Proportional to 313,316.73, 432,376.71 and 170,076.78

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Solution

The fourth proportional to 313,316.73, 432,376.71 and 170,076.78 is: 234,705.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,316.73 : 432,376.71 = 170,076.78 : x
  2. Step 2: Convert to fraction form
    313,316.73/432,376.71 = 170,076.78/x
  3. Step 3: Cross multiply
    313,316.73x = 432,376.71 × 170,076.78
  4. Step 4: Simplify right side
    313,316.73x = 73,537,238,583.79
  5. Step 5: Solve for x
    x = 73,537,238,583.79/313,316.73
  6. Step 6: Final answer
    x = 234,705.75

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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.