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Finding the Fourth Proportional to 620,309.10, 931,010.40 and 367,273.20

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Solution

The fourth proportional to 620,309.10, 931,010.40 and 367,273.20 is: 551,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,309.10 : 931,010.40 = 367,273.20 : x
  2. Step 2: Convert to fraction form
    620,309.10/931,010.40 = 367,273.20/x
  3. Step 3: Cross multiply
    620,309.10x = 931,010.40 × 367,273.20
  4. Step 4: Simplify right side
    620,309.10x = 341,935,168,841.28
  5. Step 5: Solve for x
    x = 341,935,168,841.28/620,309.10
  6. Step 6: Final answer
    x = 551,233.52

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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.