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Finding the Fourth Proportional to 531,778.78, 733,864.70 and 290,069.98

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Solution

The fourth proportional to 531,778.78, 733,864.70 and 290,069.98 is: 400,302.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,778.78 : 733,864.70 = 290,069.98 : x
  2. Step 2: Convert to fraction form
    531,778.78/733,864.70 = 290,069.98/x
  3. Step 3: Cross multiply
    531,778.78x = 733,864.70 × 290,069.98
  4. Step 4: Simplify right side
    531,778.78x = 212,872,117,401.36
  5. Step 5: Solve for x
    x = 212,872,117,401.36/531,778.78
  6. Step 6: Final answer
    x = 400,302.02

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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.