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Finding the Fourth Proportional to 499,028.91, 748,549.31 and 139,177.87

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Solution

The fourth proportional to 499,028.91, 748,549.31 and 139,177.87 is: 208,768.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,028.91 : 748,549.31 = 139,177.87 : x
  2. Step 2: Convert to fraction form
    499,028.91/748,549.31 = 139,177.87/x
  3. Step 3: Cross multiply
    499,028.91x = 748,549.31 × 139,177.87
  4. Step 4: Simplify right side
    499,028.91x = 104,181,495,988.51
  5. Step 5: Solve for x
    x = 104,181,495,988.51/499,028.91
  6. Step 6: Final answer
    x = 208,768.46

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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.