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Finding the Fourth Proportional to 328,969.05, 493,453.58 and 210,871.05

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Solution

The fourth proportional to 328,969.05, 493,453.58 and 210,871.05 is: 316,306.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,969.05 : 493,453.58 = 210,871.05 : x
  2. Step 2: Convert to fraction form
    328,969.05/493,453.58 = 210,871.05/x
  3. Step 3: Cross multiply
    328,969.05x = 493,453.58 × 210,871.05
  4. Step 4: Simplify right side
    328,969.05x = 104,055,073,486.50
  5. Step 5: Solve for x
    x = 104,055,073,486.50/328,969.05
  6. Step 6: Final answer
    x = 316,306.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.