Home / 428,394.30-642,409.29-175,500.06

Finding the Fourth Proportional to 428,394.30, 642,409.29 and 175,500.06

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Solution

The fourth proportional to 428,394.30, 642,409.29 and 175,500.06 is: 263,175.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,394.30 : 642,409.29 = 175,500.06 : x
  2. Step 2: Convert to fraction form
    428,394.30/642,409.29 = 175,500.06/x
  3. Step 3: Cross multiply
    428,394.30x = 642,409.29 × 175,500.06
  4. Step 4: Simplify right side
    428,394.30x = 112,742,868,939.56
  5. Step 5: Solve for x
    x = 112,742,868,939.56/428,394.30
  6. Step 6: Final answer
    x = 263,175.46

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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.