Home / 457,629.80-686,574.30-142,118.60

Finding the Fourth Proportional to 457,629.80, 686,574.30 and 142,118.60

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Solution

The fourth proportional to 457,629.80, 686,574.30 and 142,118.60 is: 213,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,629.80 : 686,574.30 = 142,118.60 : x
  2. Step 2: Convert to fraction form
    457,629.80/686,574.30 = 142,118.60/x
  3. Step 3: Cross multiply
    457,629.80x = 686,574.30 × 142,118.60
  4. Step 4: Simplify right side
    457,629.80x = 97,574,978,311.98
  5. Step 5: Solve for x
    x = 97,574,978,311.98/457,629.80
  6. Step 6: Final answer
    x = 213,218.15

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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.