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Finding the Fourth Proportional to 522,852.15, 721,690.52 and 308,061.62

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Solution

The fourth proportional to 522,852.15, 721,690.52 and 308,061.62 is: 425,216.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,852.15 : 721,690.52 = 308,061.62 : x
  2. Step 2: Convert to fraction form
    522,852.15/721,690.52 = 308,061.62/x
  3. Step 3: Cross multiply
    522,852.15x = 721,690.52 × 308,061.62
  4. Step 4: Simplify right side
    522,852.15x = 222,325,145,581.08
  5. Step 5: Solve for x
    x = 222,325,145,581.08/522,852.15
  6. Step 6: Final answer
    x = 425,216.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.