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Finding the Fourth Proportional to 352,691.20, 529,036.80 and 347,442.40

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Solution

The fourth proportional to 352,691.20, 529,036.80 and 347,442.40 is: 521,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,691.20 : 529,036.80 = 347,442.40 : x
  2. Step 2: Convert to fraction form
    352,691.20/529,036.80 = 347,442.40/x
  3. Step 3: Cross multiply
    352,691.20x = 529,036.80 × 347,442.40
  4. Step 4: Simplify right side
    352,691.20x = 183,809,815,480.32
  5. Step 5: Solve for x
    x = 183,809,815,480.32/352,691.20
  6. Step 6: Final answer
    x = 521,163.60

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1.5x scale

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.