Home / 215,987.88-297,869.48-135,424.20

Finding the Fourth Proportional to 215,987.88, 297,869.48 and 135,424.20

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Solution

The fourth proportional to 215,987.88, 297,869.48 and 135,424.20 is: 186,763.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,987.88 : 297,869.48 = 135,424.20 : x
  2. Step 2: Convert to fraction form
    215,987.88/297,869.48 = 135,424.20/x
  3. Step 3: Cross multiply
    215,987.88x = 297,869.48 × 135,424.20
  4. Step 4: Simplify right side
    215,987.88x = 40,338,736,033.42
  5. Step 5: Solve for x
    x = 40,338,736,033.42/215,987.88
  6. Step 6: Final answer
    x = 186,763.89

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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.