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Finding the Fourth Proportional to 492,870.40, 680,165.22 and 272,114.80

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Solution

The fourth proportional to 492,870.40, 680,165.22 and 272,114.80 is: 375,520.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,870.40 : 680,165.22 = 272,114.80 : x
  2. Step 2: Convert to fraction form
    492,870.40/680,165.22 = 272,114.80/x
  3. Step 3: Cross multiply
    492,870.40x = 680,165.22 × 272,114.80
  4. Step 4: Simplify right side
    492,870.40x = 185,083,022,807.26
  5. Step 5: Solve for x
    x = 185,083,022,807.26/492,870.40
  6. Step 6: Final answer
    x = 375,520.67

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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.