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Finding the Fourth Proportional to 499,030.91, 748,552.31 and 139,179.87

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Solution

The fourth proportional to 499,030.91, 748,552.31 and 139,179.87 is: 208,771.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,030.91 : 748,552.31 = 139,179.87 : x
  2. Step 2: Convert to fraction form
    499,030.91/748,552.31 = 139,179.87/x
  3. Step 3: Cross multiply
    499,030.91x = 748,552.31 × 139,179.87
  4. Step 4: Simplify right side
    499,030.91x = 104,183,412,498.10
  5. Step 5: Solve for x
    x = 104,183,412,498.10/499,030.91
  6. Step 6: Final answer
    x = 208,771.46

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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.