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Finding the Fourth Proportional to 352,260.60, 528,062.10 and 139,030.20

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Solution

The fourth proportional to 352,260.60, 528,062.10 and 139,030.20 is: 208,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,260.60 : 528,062.10 = 139,030.20 : x
  2. Step 2: Convert to fraction form
    352,260.60/528,062.10 = 139,030.20/x
  3. Step 3: Cross multiply
    352,260.60x = 528,062.10 × 139,030.20
  4. Step 4: Simplify right side
    352,260.60x = 73,416,579,375.42
  5. Step 5: Solve for x
    x = 73,416,579,375.42/352,260.60
  6. Step 6: Final answer
    x = 208,415.53

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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.