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Finding the Fourth Proportional to 352,854.72, 529,281 and 142,490.16

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Solution

The fourth proportional to 352,854.72, 529,281 and 142,490.16 is: 213,734.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,854.72 : 529,281 = 142,490.16 : x
  2. Step 2: Convert to fraction form
    352,854.72/529,281 = 142,490.16/x
  3. Step 3: Cross multiply
    352,854.72x = 529,281 × 142,490.16
  4. Step 4: Simplify right side
    352,854.72x = 75,417,334,374.96
  5. Step 5: Solve for x
    x = 75,417,334,374.96/352,854.72
  6. Step 6: Final answer
    x = 213,734.80

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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.