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Finding the Fourth Proportional to 391,580.15, 540,259.24 and 219,474.26

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Solution

The fourth proportional to 391,580.15, 540,259.24 and 219,474.26 is: 302,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,580.15 : 540,259.24 = 219,474.26 : x
  2. Step 2: Convert to fraction form
    391,580.15/540,259.24 = 219,474.26/x
  3. Step 3: Cross multiply
    391,580.15x = 540,259.24 × 219,474.26
  4. Step 4: Simplify right side
    391,580.15x = 118,572,996,711.94
  5. Step 5: Solve for x
    x = 118,572,996,711.94/391,580.15
  6. Step 6: Final answer
    x = 302,806.46

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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.