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Finding the Fourth Proportional to 313,291.78, 432,331.08 and 170,048.80

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Solution

The fourth proportional to 313,291.78, 432,331.08 and 170,048.80 is: 234,661.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,291.78 : 432,331.08 = 170,048.80 : x
  2. Step 2: Convert to fraction form
    313,291.78/432,331.08 = 170,048.80/x
  3. Step 3: Cross multiply
    313,291.78x = 432,331.08 × 170,048.80
  4. Step 4: Simplify right side
    313,291.78x = 73,517,381,356.70
  5. Step 5: Solve for x
    x = 73,517,381,356.70/313,291.78
  6. Step 6: Final answer
    x = 234,661.06

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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.