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Finding the Fourth Proportional to 528,538.80, 793,043.10 and 213,610.80

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Solution

The fourth proportional to 528,538.80, 793,043.10 and 213,610.80 is: 320,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,538.80 : 793,043.10 = 213,610.80 : x
  2. Step 2: Convert to fraction form
    528,538.80/793,043.10 = 213,610.80/x
  3. Step 3: Cross multiply
    528,538.80x = 793,043.10 × 213,610.80
  4. Step 4: Simplify right side
    528,538.80x = 169,402,571,025.48
  5. Step 5: Solve for x
    x = 169,402,571,025.48/528,538.80
  6. Step 6: Final answer
    x = 320,511.14

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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.