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Finding the Fourth Proportional to 305,387.85, 458,260.38 and 127,880.01

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Solution

The fourth proportional to 305,387.85, 458,260.38 and 127,880.01 is: 191,894.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,387.85 : 458,260.38 = 127,880.01 : x
  2. Step 2: Convert to fraction form
    305,387.85/458,260.38 = 127,880.01/x
  3. Step 3: Cross multiply
    305,387.85x = 458,260.38 × 127,880.01
  4. Step 4: Simplify right side
    305,387.85x = 58,602,341,977.00
  5. Step 5: Solve for x
    x = 58,602,341,977.00/305,387.85
  6. Step 6: Final answer
    x = 191,894.81

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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.