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Finding the Fourth Proportional to 538,813.20, 808,219.80 and 352,035.60

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Solution

The fourth proportional to 538,813.20, 808,219.80 and 352,035.60 is: 528,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,813.20 : 808,219.80 = 352,035.60 : x
  2. Step 2: Convert to fraction form
    538,813.20/808,219.80 = 352,035.60/x
  3. Step 3: Cross multiply
    538,813.20x = 808,219.80 × 352,035.60
  4. Step 4: Simplify right side
    538,813.20x = 284,522,142,224.88
  5. Step 5: Solve for x
    x = 284,522,142,224.88/538,813.20
  6. Step 6: Final answer
    x = 528,053.40

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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.