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Finding the Fourth Proportional to 305,378.60, 458,246.51 and 127,870.75

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Solution

The fourth proportional to 305,378.60, 458,246.51 and 127,870.75 is: 191,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,378.60 : 458,246.51 = 127,870.75 : x
  2. Step 2: Convert to fraction form
    305,378.60/458,246.51 = 127,870.75/x
  3. Step 3: Cross multiply
    305,378.60x = 458,246.51 × 127,870.75
  4. Step 4: Simplify right side
    305,378.60x = 58,596,321,988.00
  5. Step 5: Solve for x
    x = 58,596,321,988.00/305,378.60
  6. Step 6: Final answer
    x = 191,880.90

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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.