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Finding the Fourth Proportional to 498,840.40, 748,730.40 and 262,352.80

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Solution

The fourth proportional to 498,840.40, 748,730.40 and 262,352.80 is: 393,776.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,840.40 : 748,730.40 = 262,352.80 : x
  2. Step 2: Convert to fraction form
    498,840.40/748,730.40 = 262,352.80/x
  3. Step 3: Cross multiply
    498,840.40x = 748,730.40 × 262,352.80
  4. Step 4: Simplify right side
    498,840.40x = 196,431,516,885.12
  5. Step 5: Solve for x
    x = 196,431,516,885.12/498,840.40
  6. Step 6: Final answer
    x = 393,776.28

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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.