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Finding the Fourth Proportional to 531,877.78, 733,990.37 and 290,160.36

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Solution

The fourth proportional to 531,877.78, 733,990.37 and 290,160.36 is: 400,420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,877.78 : 733,990.37 = 290,160.36 : x
  2. Step 2: Convert to fraction form
    531,877.78/733,990.37 = 290,160.36/x
  3. Step 3: Cross multiply
    531,877.78x = 733,990.37 × 290,160.36
  4. Step 4: Simplify right side
    531,877.78x = 212,974,908,544.93
  5. Step 5: Solve for x
    x = 212,974,908,544.93/531,877.78
  6. Step 6: Final answer
    x = 400,420.77

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1.5x scale

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.