Home / 485,263.49-669,666.28-281,435.27

Finding the Fourth Proportional to 485,263.49, 669,666.28 and 281,435.27

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Solution

The fourth proportional to 485,263.49, 669,666.28 and 281,435.27 is: 388,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,263.49 : 669,666.28 = 281,435.27 : x
  2. Step 2: Convert to fraction form
    485,263.49/669,666.28 = 281,435.27/x
  3. Step 3: Cross multiply
    485,263.49x = 669,666.28 × 281,435.27
  4. Step 4: Simplify right side
    485,263.49x = 188,467,706,269.78
  5. Step 5: Solve for x
    x = 188,467,706,269.78/485,263.49
  6. Step 6: Final answer
    x = 388,382.21

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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.