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Finding the Fourth Proportional to 389,715.60, 584,573.40 and 368,064.30

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Solution

The fourth proportional to 389,715.60, 584,573.40 and 368,064.30 is: 552,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,715.60 : 584,573.40 = 368,064.30 : x
  2. Step 2: Convert to fraction form
    389,715.60/584,573.40 = 368,064.30/x
  3. Step 3: Cross multiply
    389,715.60x = 584,573.40 × 368,064.30
  4. Step 4: Simplify right side
    389,715.60x = 215,160,599,269.62
  5. Step 5: Solve for x
    x = 215,160,599,269.62/389,715.60
  6. Step 6: Final answer
    x = 552,096.45

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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.