Home / 427,928.40-641,719.80-147,301.20

Finding the Fourth Proportional to 427,928.40, 641,719.80 and 147,301.20

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Solution

The fourth proportional to 427,928.40, 641,719.80 and 147,301.20 is: 220,892.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,928.40 : 641,719.80 = 147,301.20 : x
  2. Step 2: Convert to fraction form
    427,928.40/641,719.80 = 147,301.20/x
  3. Step 3: Cross multiply
    427,928.40x = 641,719.80 × 147,301.20
  4. Step 4: Simplify right side
    427,928.40x = 94,526,096,603.76
  5. Step 5: Solve for x
    x = 94,526,096,603.76/427,928.40
  6. Step 6: Final answer
    x = 220,892.32

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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.