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Finding the Fourth Proportional to 499,025.88, 748,585.92 and 139,220.64

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Solution

The fourth proportional to 499,025.88, 748,585.92 and 139,220.64 is: 208,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,025.88 : 748,585.92 = 139,220.64 : x
  2. Step 2: Convert to fraction form
    499,025.88/748,585.92 = 139,220.64/x
  3. Step 3: Cross multiply
    499,025.88x = 748,585.92 × 139,220.64
  4. Step 4: Simplify right side
    499,025.88x = 104,218,610,877.39
  5. Step 5: Solve for x
    x = 104,218,610,877.39/499,025.88
  6. Step 6: Final answer
    x = 208,844.10

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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.