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Finding the Fourth Proportional to 664,677.01, 996,916.96 and 215,437.51

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Solution

The fourth proportional to 664,677.01, 996,916.96 and 215,437.51 is: 323,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,677.01 : 996,916.96 = 215,437.51 : x
  2. Step 2: Convert to fraction form
    664,677.01/996,916.96 = 215,437.51/x
  3. Step 3: Cross multiply
    664,677.01x = 996,916.96 × 215,437.51
  4. Step 4: Simplify right side
    664,677.01x = 214,773,307,539.17
  5. Step 5: Solve for x
    x = 214,773,307,539.17/664,677.01
  6. Step 6: Final answer
    x = 323,124.32

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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.