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Finding the Fourth Proportional to 310,446.69, 428,420.29 and 187,937.44

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Solution

The fourth proportional to 310,446.69, 428,420.29 and 187,937.44 is: 259,356.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,446.69 : 428,420.29 = 187,937.44 : x
  2. Step 2: Convert to fraction form
    310,446.69/428,420.29 = 187,937.44/x
  3. Step 3: Cross multiply
    310,446.69x = 428,420.29 × 187,937.44
  4. Step 4: Simplify right side
    310,446.69x = 80,516,213,016.50
  5. Step 5: Solve for x
    x = 80,516,213,016.50/310,446.69
  6. Step 6: Final answer
    x = 259,356.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.