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Finding the Fourth Proportional to 345,564.52, 519,927.90 and 205,428.04

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Solution

The fourth proportional to 345,564.52, 519,927.90 and 205,428.04 is: 309,081.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,564.52 : 519,927.90 = 205,428.04 : x
  2. Step 2: Convert to fraction form
    345,564.52/519,927.90 = 205,428.04/x
  3. Step 3: Cross multiply
    345,564.52x = 519,927.90 × 205,428.04
  4. Step 4: Simplify right side
    345,564.52x = 106,807,769,438.32
  5. Step 5: Solve for x
    x = 106,807,769,438.32/345,564.52
  6. Step 6: Final answer
    x = 309,081.99

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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.