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Finding the Fourth Proportional to 321,557.34, 443,237.76 and 253,463.88

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Solution

The fourth proportional to 321,557.34, 443,237.76 and 253,463.88 is: 349,377.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,557.34 : 443,237.76 = 253,463.88 : x
  2. Step 2: Convert to fraction form
    321,557.34/443,237.76 = 253,463.88/x
  3. Step 3: Cross multiply
    321,557.34x = 443,237.76 × 253,463.88
  4. Step 4: Simplify right side
    321,557.34x = 112,344,762,412.11
  5. Step 5: Solve for x
    x = 112,344,762,412.11/321,557.34
  6. Step 6: Final answer
    x = 349,377.07

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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.