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Finding the Fourth Proportional to 330,487.70, 456,071.82 and 187,275.11

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Solution

The fourth proportional to 330,487.70, 456,071.82 and 187,275.11 is: 258,438.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,487.70 : 456,071.82 = 187,275.11 : x
  2. Step 2: Convert to fraction form
    330,487.70/456,071.82 = 187,275.11/x
  3. Step 3: Cross multiply
    330,487.70x = 456,071.82 × 187,275.11
  4. Step 4: Simplify right side
    330,487.70x = 85,410,900,258.40
  5. Step 5: Solve for x
    x = 85,410,900,258.40/330,487.70
  6. Step 6: Final answer
    x = 258,438.97

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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.