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Finding the Fourth Proportional to 321,457.13, 443,615.95 and 176,276.13

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Solution

The fourth proportional to 321,457.13, 443,615.95 and 176,276.13 is: 243,263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,457.13 : 443,615.95 = 176,276.13 : x
  2. Step 2: Convert to fraction form
    321,457.13/443,615.95 = 176,276.13/x
  3. Step 3: Cross multiply
    321,457.13x = 443,615.95 × 176,276.13
  4. Step 4: Simplify right side
    321,457.13x = 78,198,902,678.78
  5. Step 5: Solve for x
    x = 78,198,902,678.78/321,457.13
  6. Step 6: Final answer
    x = 243,263.86

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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.