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Finding the Fourth Proportional to 307,642.58, 424,546.85 and 169,821.59

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Solution

The fourth proportional to 307,642.58, 424,546.85 and 169,821.59 is: 234,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,642.58 : 424,546.85 = 169,821.59 : x
  2. Step 2: Convert to fraction form
    307,642.58/424,546.85 = 169,821.59/x
  3. Step 3: Cross multiply
    307,642.58x = 424,546.85 × 169,821.59
  4. Step 4: Simplify right side
    307,642.58x = 72,097,221,096.49
  5. Step 5: Solve for x
    x = 72,097,221,096.49/307,642.58
  6. Step 6: Final answer
    x = 234,353.84

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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.