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Finding the Fourth Proportional to 378,862.76, 567,669.50 and 339,798.12

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Solution

The fourth proportional to 378,862.76, 567,669.50 and 339,798.12 is: 509,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,862.76 : 567,669.50 = 339,798.12 : x
  2. Step 2: Convert to fraction form
    378,862.76/567,669.50 = 339,798.12/x
  3. Step 3: Cross multiply
    378,862.76x = 567,669.50 × 339,798.12
  4. Step 4: Simplify right side
    378,862.76x = 192,893,028,881.34
  5. Step 5: Solve for x
    x = 192,893,028,881.34/378,862.76
  6. Step 6: Final answer
    x = 509,136.95

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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.