Home / 493,309.80-739,881.24-138,242.10

Finding the Fourth Proportional to 493,309.80, 739,881.24 and 138,242.10

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Solution

The fourth proportional to 493,309.80, 739,881.24 and 138,242.10 is: 207,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,309.80 : 739,881.24 = 138,242.10 : x
  2. Step 2: Convert to fraction form
    493,309.80/739,881.24 = 138,242.10/x
  3. Step 3: Cross multiply
    493,309.80x = 739,881.24 × 138,242.10
  4. Step 4: Simplify right side
    493,309.80x = 102,282,736,368.20
  5. Step 5: Solve for x
    x = 102,282,736,368.20/493,309.80
  6. Step 6: Final answer
    x = 207,339.76

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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.