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Finding the Fourth Proportional to 352,442.40, 528,663.60 and 115,792.80

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Solution

The fourth proportional to 352,442.40, 528,663.60 and 115,792.80 is: 173,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,442.40 : 528,663.60 = 115,792.80 : x
  2. Step 2: Convert to fraction form
    352,442.40/528,663.60 = 115,792.80/x
  3. Step 3: Cross multiply
    352,442.40x = 528,663.60 × 115,792.80
  4. Step 4: Simplify right side
    352,442.40x = 61,215,438,502.08
  5. Step 5: Solve for x
    x = 61,215,438,502.08/352,442.40
  6. Step 6: Final answer
    x = 173,689.20

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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.