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Finding the Fourth Proportional to 321,459.44, 443,624.76 and 178,210.94

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Solution

The fourth proportional to 321,459.44, 443,624.76 and 178,210.94 is: 245,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,459.44 : 443,624.76 = 178,210.94 : x
  2. Step 2: Convert to fraction form
    321,459.44/443,624.76 = 178,210.94/x
  3. Step 3: Cross multiply
    321,459.44x = 443,624.76 × 178,210.94
  4. Step 4: Simplify right side
    321,459.44x = 79,058,785,486.87
  5. Step 5: Solve for x
    x = 79,058,785,486.87/321,459.44
  6. Step 6: Final answer
    x = 245,937.05

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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.