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Finding the Fourth Proportional to 531,889.25, 734,008.89 and 290,176.90

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Solution

The fourth proportional to 531,889.25, 734,008.89 and 290,176.90 is: 400,445.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,889.25 : 734,008.89 = 290,176.90 : x
  2. Step 2: Convert to fraction form
    531,889.25/734,008.89 = 290,176.90/x
  3. Step 3: Cross multiply
    531,889.25x = 734,008.89 × 290,176.90
  4. Step 4: Simplify right side
    531,889.25x = 212,992,421,893.54
  5. Step 5: Solve for x
    x = 212,992,421,893.54/531,889.25
  6. Step 6: Final answer
    x = 400,445.06

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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.