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Finding the Fourth Proportional to 380,611.04, 570,916.34 and 355,388.39

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Solution

The fourth proportional to 380,611.04, 570,916.34 and 355,388.39 is: 533,082.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,611.04 : 570,916.34 = 355,388.39 : x
  2. Step 2: Convert to fraction form
    380,611.04/570,916.34 = 355,388.39/x
  3. Step 3: Cross multiply
    380,611.04x = 570,916.34 × 355,388.39
  4. Step 4: Simplify right side
    380,611.04x = 202,897,034,265.77
  5. Step 5: Solve for x
    x = 202,897,034,265.77/380,611.04
  6. Step 6: Final answer
    x = 533,082.37

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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.