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Finding the Fourth Proportional to 370,906.80, 556,360.20 and 134,419.20

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Solution

The fourth proportional to 370,906.80, 556,360.20 and 134,419.20 is: 201,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,906.80 : 556,360.20 = 134,419.20 : x
  2. Step 2: Convert to fraction form
    370,906.80/556,360.20 = 134,419.20/x
  3. Step 3: Cross multiply
    370,906.80x = 556,360.20 × 134,419.20
  4. Step 4: Simplify right side
    370,906.80x = 74,785,492,995.84
  5. Step 5: Solve for x
    x = 74,785,492,995.84/370,906.80
  6. Step 6: Final answer
    x = 201,628.80

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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.