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Finding the Fourth Proportional to 328,898.40, 493,363.80 and 171,434.40

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Solution

The fourth proportional to 328,898.40, 493,363.80 and 171,434.40 is: 257,160.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,898.40 : 493,363.80 = 171,434.40 : x
  2. Step 2: Convert to fraction form
    328,898.40/493,363.80 = 171,434.40/x
  3. Step 3: Cross multiply
    328,898.40x = 493,363.80 × 171,434.40
  4. Step 4: Simplify right side
    328,898.40x = 84,579,527,034.72
  5. Step 5: Solve for x
    x = 84,579,527,034.72/328,898.40
  6. Step 6: Final answer
    x = 257,160.04

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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.