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Finding the Fourth Proportional to 352,006.20, 528,009.30 and 102,655.80

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Solution

The fourth proportional to 352,006.20, 528,009.30 and 102,655.80 is: 153,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,006.20 : 528,009.30 = 102,655.80 : x
  2. Step 2: Convert to fraction form
    352,006.20/528,009.30 = 102,655.80/x
  3. Step 3: Cross multiply
    352,006.20x = 528,009.30 × 102,655.80
  4. Step 4: Simplify right side
    352,006.20x = 54,203,217,098.94
  5. Step 5: Solve for x
    x = 54,203,217,098.94/352,006.20
  6. Step 6: Final answer
    x = 153,983.70

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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.