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Finding the Fourth Proportional to 484,586.42, 668,729.28 and 269,721.87

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Solution

The fourth proportional to 484,586.42, 668,729.28 and 269,721.87 is: 372,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,586.42 : 668,729.28 = 269,721.87 : x
  2. Step 2: Convert to fraction form
    484,586.42/668,729.28 = 269,721.87/x
  3. Step 3: Cross multiply
    484,586.42x = 668,729.28 × 269,721.87
  4. Step 4: Simplify right side
    484,586.42x = 180,370,911,925.35
  5. Step 5: Solve for x
    x = 180,370,911,925.35/484,586.42
  6. Step 6: Final answer
    x = 372,216.20

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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.