Home / 215,986.88-297,868.10-135,423.20

Finding the Fourth Proportional to 215,986.88, 297,868.10 and 135,423.20

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Solution

The fourth proportional to 215,986.88, 297,868.10 and 135,423.20 is: 186,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,986.88 : 297,868.10 = 135,423.20 : x
  2. Step 2: Convert to fraction form
    215,986.88/297,868.10 = 135,423.20/x
  3. Step 3: Cross multiply
    215,986.88x = 297,868.10 × 135,423.20
  4. Step 4: Simplify right side
    215,986.88x = 40,338,251,279.92
  5. Step 5: Solve for x
    x = 40,338,251,279.92/215,986.88
  6. Step 6: Final answer
    x = 186,762.51

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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.