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Finding the Fourth Proportional to 328,898.40, 493,347.60 and 129,225.30

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Solution

The fourth proportional to 328,898.40, 493,347.60 and 129,225.30 is: 193,837.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,898.40 : 493,347.60 = 129,225.30 : x
  2. Step 2: Convert to fraction form
    328,898.40/493,347.60 = 129,225.30/x
  3. Step 3: Cross multiply
    328,898.40x = 493,347.60 × 129,225.30
  4. Step 4: Simplify right side
    328,898.40x = 63,752,991,614.28
  5. Step 5: Solve for x
    x = 63,752,991,614.28/328,898.40
  6. Step 6: Final answer
    x = 193,837.95

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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.