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Finding the Fourth Proportional to 515,032.34, 772,891.29 and 211,675.28

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Solution

The fourth proportional to 515,032.34, 772,891.29 and 211,675.28 is: 317,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,032.34 : 772,891.29 = 211,675.28 : x
  2. Step 2: Convert to fraction form
    515,032.34/772,891.29 = 211,675.28/x
  3. Step 3: Cross multiply
    515,032.34x = 772,891.29 × 211,675.28
  4. Step 4: Simplify right side
    515,032.34x = 163,601,976,355.86
  5. Step 5: Solve for x
    x = 163,601,976,355.86/515,032.34
  6. Step 6: Final answer
    x = 317,653.80

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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.