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Finding the Fourth Proportional to 199,415.40, 299,123.10 and 115,434.60

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Solution

The fourth proportional to 199,415.40, 299,123.10 and 115,434.60 is: 173,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,415.40 : 299,123.10 = 115,434.60 : x
  2. Step 2: Convert to fraction form
    199,415.40/299,123.10 = 115,434.60/x
  3. Step 3: Cross multiply
    199,415.40x = 299,123.10 × 115,434.60
  4. Step 4: Simplify right side
    199,415.40x = 34,529,155,399.26
  5. Step 5: Solve for x
    x = 34,529,155,399.26/199,415.40
  6. Step 6: Final answer
    x = 173,151.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.