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Finding the Fourth Proportional to 529,621.30, 794,140.35 and 213,721.30

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Solution

The fourth proportional to 529,621.30, 794,140.35 and 213,721.30 is: 320,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,621.30 : 794,140.35 = 213,721.30 : x
  2. Step 2: Convert to fraction form
    529,621.30/794,140.35 = 213,721.30/x
  3. Step 3: Cross multiply
    529,621.30x = 794,140.35 × 213,721.30
  4. Step 4: Simplify right side
    529,621.30x = 169,724,707,984.46
  5. Step 5: Solve for x
    x = 169,724,707,984.46/529,621.30
  6. Step 6: Final answer
    x = 320,464.28

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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.