Home / 428,267.26-642,351.21-112,748.77

Finding the Fourth Proportional to 428,267.26, 642,351.21 and 112,748.77

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Solution

The fourth proportional to 428,267.26, 642,351.21 and 112,748.77 is: 169,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,267.26 : 642,351.21 = 112,748.77 : x
  2. Step 2: Convert to fraction form
    428,267.26/642,351.21 = 112,748.77/x
  3. Step 3: Cross multiply
    428,267.26x = 642,351.21 × 112,748.77
  4. Step 4: Simplify right side
    428,267.26x = 72,424,308,835.51
  5. Step 5: Solve for x
    x = 72,424,308,835.51/428,267.26
  6. Step 6: Final answer
    x = 169,110.08

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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.