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Finding the Fourth Proportional to 313,290.78, 432,329.70 and 170,047.80

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Solution

The fourth proportional to 313,290.78, 432,329.70 and 170,047.80 is: 234,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,290.78 : 432,329.70 = 170,047.80 : x
  2. Step 2: Convert to fraction form
    313,290.78/432,329.70 = 170,047.80/x
  3. Step 3: Cross multiply
    313,290.78x = 432,329.70 × 170,047.80
  4. Step 4: Simplify right side
    313,290.78x = 73,516,714,359.66
  5. Step 5: Solve for x
    x = 73,516,714,359.66/313,290.78
  6. Step 6: Final answer
    x = 234,659.68

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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.