Home / 420,848.92-580,747.98-239,605.12

Finding the Fourth Proportional to 420,848.92, 580,747.98 and 239,605.12

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Solution

The fourth proportional to 420,848.92, 580,747.98 and 239,605.12 is: 330,641.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,848.92 : 580,747.98 = 239,605.12 : x
  2. Step 2: Convert to fraction form
    420,848.92/580,747.98 = 239,605.12/x
  3. Step 3: Cross multiply
    420,848.92x = 580,747.98 × 239,605.12
  4. Step 4: Simplify right side
    420,848.92x = 139,150,189,437.66
  5. Step 5: Solve for x
    x = 139,150,189,437.66/420,848.92
  6. Step 6: Final answer
    x = 330,641.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.