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Finding the Fourth Proportional to 352,114.04, 528,176.52 and 85,879.59

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Solution

The fourth proportional to 352,114.04, 528,176.52 and 85,879.59 is: 128,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,114.04 : 528,176.52 = 85,879.59 : x
  2. Step 2: Convert to fraction form
    352,114.04/528,176.52 = 85,879.59/x
  3. Step 3: Cross multiply
    352,114.04x = 528,176.52 × 85,879.59
  4. Step 4: Simplify right side
    352,114.04x = 45,359,582,985.23
  5. Step 5: Solve for x
    x = 45,359,582,985.23/352,114.04
  6. Step 6: Final answer
    x = 128,820.72

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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.