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Finding the Fourth Proportional to 261,963.84, 393,017.98 and 104,303

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Solution

The fourth proportional to 261,963.84, 393,017.98 and 104,303 is: 156,483.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,963.84 : 393,017.98 = 104,303 : x
  2. Step 2: Convert to fraction form
    261,963.84/393,017.98 = 104,303/x
  3. Step 3: Cross multiply
    261,963.84x = 393,017.98 × 104,303
  4. Step 4: Simplify right side
    261,963.84x = 40,992,954,367.94
  5. Step 5: Solve for x
    x = 40,992,954,367.94/261,963.84
  6. Step 6: Final answer
    x = 156,483.25

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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.