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Finding the Fourth Proportional to 355,402.88, 532,840.96 and 215,128.32

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Solution

The fourth proportional to 355,402.88, 532,840.96 and 215,128.32 is: 322,533.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,402.88 : 532,840.96 = 215,128.32 : x
  2. Step 2: Convert to fraction form
    355,402.88/532,840.96 = 215,128.32/x
  3. Step 3: Cross multiply
    355,402.88x = 532,840.96 × 215,128.32
  4. Step 4: Simplify right side
    355,402.88x = 114,629,180,551.99
  5. Step 5: Solve for x
    x = 114,629,180,551.99/355,402.88
  6. Step 6: Final answer
    x = 322,533.07

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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.