Home / 309,199.45-463,787.05-129,238.40

Finding the Fourth Proportional to 309,199.45, 463,787.05 and 129,238.40

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Solution

The fourth proportional to 309,199.45, 463,787.05 and 129,238.40 is: 193,852.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,199.45 : 463,787.05 = 129,238.40 : x
  2. Step 2: Convert to fraction form
    309,199.45/463,787.05 = 129,238.40/x
  3. Step 3: Cross multiply
    309,199.45x = 463,787.05 × 129,238.40
  4. Step 4: Simplify right side
    309,199.45x = 59,939,096,282.72
  5. Step 5: Solve for x
    x = 59,939,096,282.72/309,199.45
  6. Step 6: Final answer
    x = 193,852.53

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1.5x scale

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.