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Finding the Fourth Proportional to 328,866.90, 493,108.92 and 128,952.96

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Solution

The fourth proportional to 328,866.90, 493,108.92 and 128,952.96 is: 193,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,866.90 : 493,108.92 = 128,952.96 : x
  2. Step 2: Convert to fraction form
    328,866.90/493,108.92 = 128,952.96/x
  3. Step 3: Cross multiply
    328,866.90x = 493,108.92 × 128,952.96
  4. Step 4: Simplify right side
    328,866.90x = 63,587,854,836.40
  5. Step 5: Solve for x
    x = 63,587,854,836.40/328,866.90
  6. Step 6: Final answer
    x = 193,354.38

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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.