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Finding the Fourth Proportional to 352,430.20, 528,702.90 and 115,708.60

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Solution

The fourth proportional to 352,430.20, 528,702.90 and 115,708.60 is: 173,581.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,430.20 : 528,702.90 = 115,708.60 : x
  2. Step 2: Convert to fraction form
    352,430.20/528,702.90 = 115,708.60/x
  3. Step 3: Cross multiply
    352,430.20x = 528,702.90 × 115,708.60
  4. Step 4: Simplify right side
    352,430.20x = 61,175,472,374.94
  5. Step 5: Solve for x
    x = 61,175,472,374.94/352,430.20
  6. Step 6: Final answer
    x = 173,581.81

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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.