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Finding the Fourth Proportional to 499,037.36, 748,562.05 and 139,186.31

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Solution

The fourth proportional to 499,037.36, 748,562.05 and 139,186.31 is: 208,781.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,037.36 : 748,562.05 = 139,186.31 : x
  2. Step 2: Convert to fraction form
    499,037.36/748,562.05 = 139,186.31/x
  3. Step 3: Cross multiply
    499,037.36x = 748,562.05 × 139,186.31
  4. Step 4: Simplify right side
    499,037.36x = 104,189,590,808.00
  5. Step 5: Solve for x
    x = 104,189,590,808.00/499,037.36
  6. Step 6: Final answer
    x = 208,781.14

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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.