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Finding the Fourth Proportional to 305,426.10, 458,317.80 and 127,918.20

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Solution

The fourth proportional to 305,426.10, 458,317.80 and 127,918.20 is: 191,952.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,426.10 : 458,317.80 = 127,918.20 : x
  2. Step 2: Convert to fraction form
    305,426.10/458,317.80 = 127,918.20/x
  3. Step 3: Cross multiply
    305,426.10x = 458,317.80 × 127,918.20
  4. Step 4: Simplify right side
    305,426.10x = 58,627,188,003.96
  5. Step 5: Solve for x
    x = 58,627,188,003.96/305,426.10
  6. Step 6: Final answer
    x = 191,952.12

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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.