Home / 428,267.70-642,182.85-158,382.18

Finding the Fourth Proportional to 428,267.70, 642,182.85 and 158,382.18

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Solution

The fourth proportional to 428,267.70, 642,182.85 and 158,382.18 is: 237,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,267.70 : 642,182.85 = 158,382.18 : x
  2. Step 2: Convert to fraction form
    428,267.70/642,182.85 = 158,382.18/x
  3. Step 3: Cross multiply
    428,267.70x = 642,182.85 × 158,382.18
  4. Step 4: Simplify right side
    428,267.70x = 101,710,319,741.61
  5. Step 5: Solve for x
    x = 101,710,319,741.61/428,267.70
  6. Step 6: Final answer
    x = 237,492.39

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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.