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Finding the Fourth Proportional to 313,393.80, 432,486.56 and 170,155.02

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Solution

The fourth proportional to 313,393.80, 432,486.56 and 170,155.02 is: 234,815.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,393.80 : 432,486.56 = 170,155.02 : x
  2. Step 2: Convert to fraction form
    313,393.80/432,486.56 = 170,155.02/x
  3. Step 3: Cross multiply
    313,393.80x = 432,486.56 × 170,155.02
  4. Step 4: Simplify right side
    313,393.80x = 73,589,759,266.53
  5. Step 5: Solve for x
    x = 73,589,759,266.53/313,393.80
  6. Step 6: Final answer
    x = 234,815.62

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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.