Home / 317,890.80-476,447.40-140,209.20

Finding the Fourth Proportional to 317,890.80, 476,447.40 and 140,209.20

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Solution

The fourth proportional to 317,890.80, 476,447.40 and 140,209.20 is: 210,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,890.80 : 476,447.40 = 140,209.20 : x
  2. Step 2: Convert to fraction form
    317,890.80/476,447.40 = 140,209.20/x
  3. Step 3: Cross multiply
    317,890.80x = 476,447.40 × 140,209.20
  4. Step 4: Simplify right side
    317,890.80x = 66,802,308,796.08
  5. Step 5: Solve for x
    x = 66,802,308,796.08/317,890.80
  6. Step 6: Final answer
    x = 210,142.32

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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.