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Finding the Fourth Proportional to 307,958.76, 424,748.55 and 265,009.84

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Solution

The fourth proportional to 307,958.76, 424,748.55 and 265,009.84 is: 365,511.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,958.76 : 424,748.55 = 265,009.84 : x
  2. Step 2: Convert to fraction form
    307,958.76/424,748.55 = 265,009.84/x
  3. Step 3: Cross multiply
    307,958.76x = 424,748.55 × 265,009.84
  4. Step 4: Simplify right side
    307,958.76x = 112,562,543,941.60
  5. Step 5: Solve for x
    x = 112,562,543,941.60/307,958.76
  6. Step 6: Final answer
    x = 365,511.75

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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.