Home / 485,232.18-669,634.47-281,283.90

Finding the Fourth Proportional to 485,232.18, 669,634.47 and 281,283.90

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Solution

The fourth proportional to 485,232.18, 669,634.47 and 281,283.90 is: 388,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,232.18 : 669,634.47 = 281,283.90 : x
  2. Step 2: Convert to fraction form
    485,232.18/669,634.47 = 281,283.90/x
  3. Step 3: Cross multiply
    485,232.18x = 669,634.47 × 281,283.90
  4. Step 4: Simplify right side
    485,232.18x = 188,357,395,296.03
  5. Step 5: Solve for x
    x = 188,357,395,296.03/485,232.18
  6. Step 6: Final answer
    x = 388,179.93

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1.5x scale

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.