Home / 245,289.21-338,591.63-143,347.89

Finding the Fourth Proportional to 245,289.21, 338,591.63 and 143,347.89

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Solution

The fourth proportional to 245,289.21, 338,591.63 and 143,347.89 is: 197,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,289.21 : 338,591.63 = 143,347.89 : x
  2. Step 2: Convert to fraction form
    245,289.21/338,591.63 = 143,347.89/x
  3. Step 3: Cross multiply
    245,289.21x = 338,591.63 × 143,347.89
  4. Step 4: Simplify right side
    245,289.21x = 48,536,395,015.42
  5. Step 5: Solve for x
    x = 48,536,395,015.42/245,289.21
  6. Step 6: Final answer
    x = 197,874.15

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1.5x scale

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.