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Finding the Fourth Proportional to 281,386.85, 388,051.53 and 260,487.29

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Solution

The fourth proportional to 281,386.85, 388,051.53 and 260,487.29 is: 359,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,386.85 : 388,051.53 = 260,487.29 : x
  2. Step 2: Convert to fraction form
    281,386.85/388,051.53 = 260,487.29/x
  3. Step 3: Cross multiply
    281,386.85x = 388,051.53 × 260,487.29
  4. Step 4: Simplify right side
    281,386.85x = 101,082,491,423.36
  5. Step 5: Solve for x
    x = 101,082,491,423.36/281,386.85
  6. Step 6: Final answer
    x = 359,229.63

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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.