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Finding the Fourth Proportional to 321,365.83, 442,475.21 and 272,866.67

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Solution

The fourth proportional to 321,365.83, 442,475.21 and 272,866.67 is: 375,698.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,365.83 : 442,475.21 = 272,866.67 : x
  2. Step 2: Convert to fraction form
    321,365.83/442,475.21 = 272,866.67/x
  3. Step 3: Cross multiply
    321,365.83x = 442,475.21 × 272,866.67
  4. Step 4: Simplify right side
    321,365.83x = 120,736,738,193.37
  5. Step 5: Solve for x
    x = 120,736,738,193.37/321,365.83
  6. Step 6: Final answer
    x = 375,698.74

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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.