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Finding the Fourth Proportional to 531,877.50, 733,992.73 and 290,165.18

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Solution

The fourth proportional to 531,877.50, 733,992.73 and 290,165.18 is: 400,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,877.50 : 733,992.73 = 290,165.18 : x
  2. Step 2: Convert to fraction form
    531,877.50/733,992.73 = 290,165.18/x
  3. Step 3: Cross multiply
    531,877.50x = 733,992.73 × 290,165.18
  4. Step 4: Simplify right side
    531,877.50x = 212,979,128,223.77
  5. Step 5: Solve for x
    x = 212,979,128,223.77/531,877.50
  6. Step 6: Final answer
    x = 400,428.91

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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.