Home / 245,948.20-339,409.64-138,520.02

Finding the Fourth Proportional to 245,948.20, 339,409.64 and 138,520.02

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Solution

The fourth proportional to 245,948.20, 339,409.64 and 138,520.02 is: 191,158.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,948.20 : 339,409.64 = 138,520.02 : x
  2. Step 2: Convert to fraction form
    245,948.20/339,409.64 = 138,520.02/x
  3. Step 3: Cross multiply
    245,948.20x = 339,409.64 × 138,520.02
  4. Step 4: Simplify right side
    245,948.20x = 47,015,031,740.08
  5. Step 5: Solve for x
    x = 47,015,031,740.08/245,948.20
  6. Step 6: Final answer
    x = 191,158.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.